Muscle car definitions?

My Valiant with a 273 from the Factory is Not a Muscle car,

My 1967 Camaro, RS, 4 speed with a 427 engine swap Is.

I sold the Camaro 2 years ago, a month After I bought my Valiant.

Yes the Camaro was a neat car, turned heads, would smoke the tires,
etc.

I had looked for nearly 30 years, for a 64-65 2 door Factory V8 Valiant.

The Valiant is much more comfortable to ride in, and I am
Very happy with the car.Especially with the minor mods I have done to it, like adding dual exhaust. 14 inch tires, etc. {205/70r14 to replace the hard to find 7.00x13 that the V8 Valiants, Darts etc came with.}

It helps, that I found a former California car, that wasn't rotted. :)