GM doesnt have a car right now with a Big block so we know if will be a small block. ?????? anyways the cadillac is a small block to. it just has the dual over head cam heads. i can c the 4.0 going in the GP. That way gm could excuse itself away from the eaton. less warranty issues. but i say thro a eaton on the 4.0 and letter eat?!?!?! then you would talkin mustanger slaughter vette comp. wooo hooo somebody suggest that

1 more thang....all wheel drive would be bad...