IMHO, the only muscle cars are American made. A muscle car also MUST have 8 cylinders and seat four. Two seaters with lots of power like the Corvette and Viper are sports cars. Imports are just sport compacts.
I'm surprise that no one bit on my comment that V6 Mustangs and Camaros are "real" Mustangs and Camaros. There, I said it again.
