@Leadfoot,
I like NA OHC V12s better than I like most other non-V8s.
But I really don't see why a pushrod V8 isn't more than enough.
Chevy's fourth generation LS7 engine has 505 horsepower. That's the hand-built 427 engine that was in the 2006-2013 Z06 Corvettes and 2014-2015 Z28 Camaros.
Chevy's fifth generation LT1 engine has 460 horsepower. That's the mass-produced engine that powered the base model 2014-2019 Corvettes and still powers the Camaro.
Does a car need more horsepower than that? The legendary Hemi from the classic muscle car era only had 350 net horsepower.