ultimate muscle car?
GreaseMonkey: 70 Chevelle SS 454 LS6
Corvette is a sports car
F*rd Mustang & Chevy Camaro are Pony cars
Charger, Challenger, etc are over-sized Pony cars but under-sized Muscle Cars
Thread is called muscle car, so I say the Heavy Chevy Chevelle.
If you throw technicalities out the window: 1969 Camaro ZL1. Factory race car.