I'm sure we can all agree that the "Muscle Era" was generally 1968-1972, though we can sometimes paint that with a broader brush and say 1964-1974
Myself, I look at 68-72 being the peak of the era, and generally agree with the offerings from the 64-74 years, but a few from the late 50's can qualify as "musclecars", they only lack the nomenclature..... same could be said for some foreign makes
It probably depends on when you were raised and where, I remember the 1958 Chevy Impala, Bel Air and Biscanyes(SP?) with the 348 Tri Power, the 1958 Pontiac with fuel injection and others starting the muscle car wars, not the 1964 Pontiac GTO, they started the pony car wars
1962 Chevy 409 4 speeds, 413 and 426 Max wedges, 1961 406 tri power Fords, the 389 Pontiac Tri Power and later 1964 421 dual quad Pontiac in full size cars and the later 19631/2 Galaxy 427 dual quad Fords were in my mind the hay days of the muscle car wars
The 1964 pony cars made by all three major brands started the down sizing of the muscle cars to pony cars with bigger more powerful motors in 1965
