A front-engined pony car since its inception in 1964, the Ford Mustang has occasionally been imagined as a mid-engined sports car. In fact, Ford used the Mustang name on a mid-engined concept car it built in 1962. It's called the Mustang I and it sparked rumors that Ford might build a competitor for the Corvette. The idea was revisited in 1967 with the Mach 2 concept, but the production Mustang remained a front-engined vehicle to this day. But it seems that Ford built another mid-engined Mustang in 1966 and forgot about it. Photos of the vehicle were found recently in Ford's archives and the automaker wants your help to identify it.