I think I understand why you guys are choosing these classic muscle cars and I could easily live with any of them

And like you say, building one or rebuilding one can give tremendous satisfaction.
I don't know how old you are, but for reference I was 18yo in 1967, and I grew up driving and drag racing these cars like you are choosing, including all sorts of Hemis (always capitalized like "God"), 440 Magnums, 440 six packs, 396 Chevelles, 454 Chevelle, GTX, Road Runner, all sorts of Corvettes, GTO's, 442's, and many street rods, some of these stock and some with pretty radical mods. So in spite of the fact that I'm watching Barrett Jackson auction as I type this, and earlier tonight a Hemi Cuda sold for something like $2 million, IMO the fantasy and legend of these cars exceeds their actual performance. In fact, my current fun car (700hp '95 Supra 6sp) could take out almost any of them in any kind of venue, straight or curvey. I'd still take the CB1 over any of them so I can enjoy driving it, not collecting it or building it.