7: 1964 Pontiac Tempest GTO
Contrary to popular belief, the first GTO was actually born as a trim package for the Tempest. The car came out of the factory with tire-blazing speed, but the next generation of the car was even better. This is the GTO that you want if you are a serious collector. The powerful V8 was exclusive to Pontiac at a time when the brand was being touted as the performance division of GM.
Pontiac has a way of designing compelling muscle cars, and the GTO just managed to connect with owners on a deeper level. The car has become iconic with the muscle car world and is one of the first nameplates that comes to mind.