Some muscle was earlier but maybe pricier. ‘61 Pontiac Catalina 389x3x2? 63 Sprint 289 4 spd. ‘61 Starliner 406 2x4. The first muscle I saw when my dad got transferred back to the states from England was in my mom’s podunk hometown in the hills of PA. At the local ford dealer a 63 1/2 blacked out fast back 427 galaxie with a dual quad 4 spd beast. Drooling....................... Of course the Chevy 409 cars as well. Dodge cross ram 413s then 426 wedges then hemis. Ah, the good old days.
I drove the Olds one time to the car wash. One the way home, a Trans Am pulled next to me at a stoplight and was zooming the engine at me for some reason so I hooked it up into a drag race. Blew the doors off the Trans Am then shut it down. As the Trans Am shot by me, I gave the Trans Am a couple of yelps on the siren. Bad bad bad of me but there you go.
BTW, my car at the time was a 67 Barracuda fastback.