Yes everything else is, powerglide trans, 2.seventy somthing gears. The book in the glove box has the oil changed every 3K miles, also wrote down every time he packed wheel bearings, put on brakes, exhaust, air filter,tires and on and on and on.............Someone told me that the factory somtimes did that if there was a shortage of parts..............i don't know.............The book said he had the dealership change the rocker arm, but who knows what that GM mechanic did in 72.