Yuk! Cougar, mustang, i just threw up my chicken salad! Yes you're right about the "pony car" era, but 1961 impala I believe was the first car offered with the SS option. As far as body styling, I'll give you that, but GM was already making bad ass cars like the 55-57 bel air and everything with 2 doors to follow. Plus in 1964 you could have bought the chevelle SS, only women bought the 64 mustang. ONLY women...that's factual...1964-65 Ford Mustang, followed by (not necessarily in order) Mercury Cougar, Chevrolet Camaro, Pontiac Firebird/Trans-Am, etc.
The Pony Car era. Long hood, short deck, body style.
That's a full size cardboard remake of a fast back. Not real.... you've jumped out of one too many planes and are suffering from oxygen deprivation in your brain. Lou told me so I know it's true..