It would be sweet to see Challengers racing, although I do not think that Le Mans would have a class where they could be competitive. Prototype classes are purpose-built race cars. The GT classes are for race-modified street cars, and are usually dominated by Porsches, Ferraris, Corvettes, Vipers etc. The Corvettes have been exceptionally successful recently, so the U.S. has been holding its own. Asking the Challenger to compete on a track against pure sports cars with equal modification would not be fair. If Chrysler had the money it would make a great publicity stunt though.

A better venue would be NASCAR going back to true stock-car racing and letting the pony cars compete in a league there. Or maybe something like the German DTM series where you have bigger touring cars racing, rather than mid-engine sports cars.

I'm not into drifiting as a sport, but it is fun as a spectacle. To dismiss it as exclusively Japanese is silly. Almost every car commercial in America features wild powerslides. Getting sideways is as American as a large V8.