Here is the Mustang Club of America Rulebook for the Engine Compartment they use for judging:
1971 - 1973 MUSTANG CONCOURS TRAILERED / DRIVEN
4. ENGINE COMPARTMENT Points
A. Battery Carrier: With appropriate attaching parts. Heat shield on big block cars. Must have “L” bracket. If hole is present, bracket required.. 2
Workmanship, condition and cleanliness... 1
B. Battery: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Group 22, 24 or 27 acceptable ...... 6
Driven Exception:
Autolite or early Motorcraft with screw in caps ............. no deduction
Motorcraft replacement without screw in caps .... mandatory 3 point deduction
All other brands ... mandatory 6 point deduction
Autolite battery cover ..... mandatory 6 point deduction
Workmanship, condition and cleanliness.......... 1
C. Starter Solenoid: 71 - black Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Correct, type with Ford part number. Mounted in original location.... 2
Workmanship, condition and cleanliness ..... 1
D. Battery Cables and Starter Cable: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Routed in original position.
Positive Cable: Red with correct Ford stamped numbers.
Starter and Ground Cable: Black. Original mounting bracket. Cables printed as original. No paper sleeves.... 3
Workmanship, condition and cleanliness.... 2
E. Alternator and Starter: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft.
Alternator: Natural cast aluminum finish.
Alternator Fan, Pulley, Lock Washer and Nut: Zinc dichromate finish.
Alternator Spacer: Bare aluminum finish.
Starter: Semi-gloss black.. 2
Workmanship, condition and cleanliness ...... 2
F. Air Cleaner and Attaching Parts: Proper type for model, painted correct Ford Corporate blue with proper air cleaner decal. No Ram-Air units on 72-73 351 4V equipped cars without proper documentation. Ram-Air unit must be proper for year and model of car ............................... 4
Workmanship, condition and cleanliness .......... 2
G. Engine Components to be Painted:
Ford Corporate Blue Components: Engine block, head/heads, intake manifold, carburetor plate (may be natural), valve covers and oil dipstick handle, thermostat housing, bypass hose and clamps (may be painted or natural), water pump assembly, timing cover, oil pan, oil dipstick tube.
Semi-Gloss Black Components: Fan, fan pulley, crankshaft pulley, alternator bracket and adjustment arm.
Semi-Gloss Black or Natural Components: Engine mount brackets, harmonic balancer............................................ 6
Workmanship, condition and cleanliness ....... 6
H. Engine Components to be Natural: Bell housing (may have blue overspray), accelerator linkage, distributor hold-down bracket and automatic transmission dipstick handle.
Valve Covers: 429 bare aluminum................. 5
Workmanship, condition and cleanliness ........ 5
I. Carburetor and Intake Manifold: Proper type for year and engine ........... 5
Workmanship, condition and cleanliness........ 2
J. Distributor and Cap:
Distributor: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Proper design and natural aluminum finish. Correct for year and model. Must have vacuum advance.
Cap: 71 - black with raised AUTOLITE letters. 72 - Autolite or Motorcraft. 73 - Motorcraft................................... 3
Driven Exception:
Petronix points replacement module or equivalent acceptable ................................... no deduction
Workmanship, condition and cleanliness...... 2
K. Coil: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Yellow ceramic top. Mounted in correct location. Mounting bracket finish can be semi-gloss black or phosphate and oil .................. 2
Workmanship, condition and cleanliness.... 1
L. Spark Plugs and Wires: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Black or orange boots. Properly routed with correct attaching brackets.
Spark Plugs: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Correct style and type for engine and year.
Driven Exception:
Motorcraft spark plugs .......... no deduction
Workmanship, condition and cleanliness ...... 2
M. Exhaust Manifolds: Natural cast iron appearance (paint acceptable). May show engine color overspray. Washer (ramp-lock) style locks. No manifold gaskets .. 3
Workmanship, condition and cleanliness .... 2
N. Fuel Lines and Attaching Parts:
Rigid Lines: Original configuration and finish in original location with proper attaching parts.
Flex Lines: Black with original factory markings.
Clamps: Spring style...... 2
Driven Exception:
Stainless steel brake lines ................ no deduction
Workmanship, condition and cleanliness .... 1
O. Fuel Pump: 71-73 V-8 Carter. 6 cylinder Carter, AC or Autolite. Original design. Natural cast aluminum and zinc dichromate finish...... 3
Workmanship, condition and cleanliness...... 2
P. Oil Filter: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Engine block color or white with Autolite/ Motorcraft design. Block color filters must have correct ribbed end and logo .... 2
Workmanship, condition and cleanliness..... 1
Q. Air Conditioning and Attaching Parts:
Semi-Gloss Black Components: Brackets, York and Tecumseh A/C compressors, condenser, and dryer. A/C brackets may have machined surfaces.
Natural Components: Fan clutch.................................................. 3
Workmanship, condition and cleanliness....... 2
R. Power Steering:
Semi-Gloss Black Components: Pump pulley. Pump. Front of pump matches canister. Mounting bracket.
Natural Components: Aluminum spacer and aluminum mounting bracket...... 2
Workmanship, condition and cleanliness... 2
S. Emission System: 71-73 - proper PCV valve. 72 California cars and 73 all, EGR valve. All cars must have proper size charcoal canister mounted in the proper location ...... 6
Workmanship, condition and cleanliness.. 3
T. Fender and Inner Fender Bolts: Original color and style with disc washers. Zinc dichromate and cadmium finish... 3
Workmanship, condition and cleanliness.... 2
U. Horns: Semi-gloss black. Original design. Mounted in original location with proper mounting bracket. Must be marked HI and LO.. 2
Workmanship, condition and cleanliness ..... 1
V. Windshield Washer Assembly, Windshield Reservoir Assembly, Mounting Brackets, Hoses and Pump: Original type and finish Mounted in original location. Plastic container must have D1TF-BA or D1TF-CA ...... 2
Workmanship, condition and cleanliness...... 2
W. Firewall and Inner Fender Panels: Painted semi-gloss black. Shock tower braces, correct slop gray color. Shock tower caps, natural steel or phosphate and oil finish. 3
X. Sound Deadener (Sealant): At proper places on firewall including any areas where components come through the firewall, such as wiring and heater motor. No sound deadener with documentation.... 2
Workmanship, condition and cleanliness of items W through X ...... 4
Y. Underside of Hood: Same color as exterior .............. 2
Workmanship, condition and cleanliness ............... 2
Z. Hood Release, Latch and Latch Support:
Release and Latch: Original style. Natural steel or phosphate and oil finish.
Latch Support: Painted correct slop gray color..... 2
Workmanship, condition and cleanliness ......... 2
AA. Hood Hinges and Springs: Original style. Phosphate and oil finish. NASA (Ram-Air) hoods must have the proper flat wire springs. 2
Workmanship, condition and cleanliness ...... 2
BB. Decals: 71 only - Service Specification decal. Battery Test decal. Cubic inch air cleaner decal. Emission Service decal. Caution Fan decal... 3
CC. Voltage Regulator: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. All riveted cover and non-electronic................. 2
Workmanship, condition and cleanliness ... 1
DD. Wiring: Proper gauge and color code, mounted in original location with proper attaching clips. Black plastic wrapping as original... 3
Workmanship, condition and cleanliness.... 2
EE. Master Cylinder, Power Brake Unit and Rigid Brake Lines:
Master Cylinder: Semi-gloss black or cast iron finish.
Cap: Semi-gloss black or cadmium finish. Cap must have correct logo, USE ONLY ESA-M6C25 BRAKE FLUID CAUTION. No DOT 3 marked caps.
Power Brake Booster: Semi-gloss black finish.
Rigid Brake Lines: Natural steel finish.. 3
Driven Exception:
Stainless steel brake lines .......................... no deduction
Workmanship, condition and cleanliness...... 2
FF. Radiator, Hoses and Clamps:
Radiator: Ford type with FoMoCo logo. Painted semi-gloss black with proper core thickness and black rubber overflow tube. All cars must have proper fans and fan shrouds.
Hoses: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Molded rubber hose of original size and configuration.
Clamps: Wire style with wire staples..... 6
Workmanship, condition and cleanliness...... 4
GG. Radiator Cap: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Pressure release cap allowed........... 1
Workmanship, condition and cleanliness ...... 1
HH. Heater Hoses and Clamps:
Hoses: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Black ribbed style with or yellow stripe.
Clamps: Pedestal type only......... 3
Workmanship, condition and cleanliness..... 2
II. Belts: 71 - Autolite. 72 - Autolite or Motorcraft. 73 - Motorcraft. Ink-stamped, embossed or debossed ................ 3
Workmanship, condition and cleanliness ...... 1
JJ. Aluminum Engine ID Tag: Visible on intake manifold or mounted under the coil bracket. Cars built after 2/1/73 use paper decal on right side cover ..... 1
KK. Point Deductions for items not proper or original and not previously deducted