Best bases for NASCAR-like cars?

Hello, because in Forza Horizon 4 there are no typical NASCAR machines I am trying to build my own based on real life performance rules like V8 engine, wide slick tyres, weight about 1500 kg etc. Which cars are best bases to make (almost) real life NASCAR ones? Currently I have tuned Buick Regal GNX and Pontiac Firebird '87, I am also trying to find Chevrolet Monte Carlo Super Sport.

Found this: List of NASCAR Manufacturers' champions - Wikipedia

Theres a list of ever manufacturer and car in the Manufacturers Representation section.