NASCAR Stock Cars in Gran Turismo... let me think about that... hell f:censored:in' no! Not even to race Test Course and Twin Ring Motegi Super Speedway. Even with about maybe 20 to a track, I personally won't race them in the next GT. Another complaint that would come is that some people would think PD can't come up with the distinctive stock car roar. And for most of us Americans who watch Speed Channel hoping for something other than some form of stock car oval racing, many of us know that sound pretty well. I'll race an Australian V8, but I wouldn't want a "stock" car in my virtual garage. If I wanted a "stock" car, I'd just race a car in stock form and not have to worry about a family sedan with a 700+ hp with no functional lights and doors, or an adjustable lip spoiler (or however it's described).
Having said this, to put it loosely, if you can road race a stock car around a tough road course, you can race anything. Jeff Gordon is my boy on road courses, though he's not having a good season right now. Maybe my disapproval of NASCAR stock cars in the game stretches into seeing these in GT games. I didn't really like the Racing Mod for the Ford Taurus in GT2 (though interesting), but if I wanted a pure NASCAR machine, I'd probably build up a past NASCAR race car. Maybe something from the old days. Either that, or I'd stay away from any sort of oval racing machine.