[376LS3]

Every car is going to need drivetrain modifications if you are planning to double to the horsepower. If you are only shooting for 700hp, that wont even come close to compromising a 9" IRS durability. The 5.0 doesnt come stock with a 9", so there is potential to break at some point. I heard the trannies in those are a weak link. So if you are into racing, decide if you want to buy a diff, or a tranny. Or buy an old 4th gen Camaro and build the hell out of it for 1/4 the price of a 5th gen.