That is indeed a beautiful Convertible Mustang. One of our pony cars is also a 1973 Mustang Convertible. It is a True Survivor as well, having been literally barn stored over 40 years after a prior owner became very ill. We are the 4th owner (1st owner traded it soon after his purchase for a 4x4 truck, owner 2 and his family had it over 40 years and stored it when he became very ill, owner 3 purchased it with just over 17,000 original miles and did some maintenance, replaced the top, replaced the tires, installed a set or 14" Magnum 500 wheels, and a installed dual exhaust system with an H-Pipe). We acquired it about 3 years ago with just over 19,000 original miles on it. The paint is original (Gold Glow) is truly in immaculate, near perfect, and well preserved condition.
The engine is a 302 2v v-8, with a C4 automatic transmission. We added Classic Air air conditioning, replaced the original taillight incandescent bulbs with a set of LED panels, installed a Garmin Drive 72 GPS and wireless backup camera, replaced the original idiot light instrument panel with a Dakota VHX analog gauge instrument panel, installed a full length center console (ACP), installed a WebCam, and have done some routine maintenance using only the best parts, material, and engine oil available. Despite neve3r having an overheating problem, I installed a Champion aluminum three row radiator with matching aluminum fan shroud that holds dual electric cooling fans (our 73 Mach 1 had a cooling issue with low speed driving and prolonged idling, so I installed a dual electric fan cooling system with terrific results). I also installed a coolant overflow/capture tank. This is a treasure chest on wheels, and we are fortunate to own such a wonderful piece of automotive history.
The vert looks as good as it drives. Everything on it works. I rebuilt the carburetor as it had a slight hesitation on light acceleration. It turns out the carb had been rebuilt once before and someone had the fuel bowl float level set just over 1/4" too low. That is now corrected, and the engine now starts, runs and performs perfectly. Although the paint is original, and in really great condition, there was one small area just below the trunk lock where the original paint was a bit thin and a tiny bit of corrosion had begun to take hold. I removed the trunk lid and had the lower part of the rear vertical edge corrected where the rust had tried to get a foothold, and repainted only on the lower half of that vertical surface. I then installed a rear trunk stripe to lay over the area where the new paint met the old paint in order to both hide/obscure the new vs old paint difference (impossible to have seen anyway), and to give the Mustang a little more edge to its look.
I also added a front spoiler, just to give it a little more visual edge to an otherwise fairly demure, very stock looking Mustang Convertible. Working on and tinkering with this vert, or driving it, is like stepping back 50 years in time.