This is always a tricky endeavor but I'll give it a whirl. Standard disclaimer on accuracy of the information provided. 3=1973, F=Dearborn, Q= 351C 4V, 05=2 door sportsroof (Mach), 63R=Mach 1, 0022=rotation number?, 2B=bright red exterior, AC=air conditioning, PB=power brakes, ADX=(should be interior color)?, white=?, AM=AM radio(could be changed at final assembly), CS=full length console, PW=power windows, EC=? BTRAC=black trim and accent, RS=rear seat, FDS=fold down seat, DE=deluxe interior. Let me know how much of the above seems to be correct as this is an ongoing learning process for me. bkdunha may have more accurate and complete decoding for you. Chuck