This one falls in line with the L89 Nova and 70 L78 TH400 Camaro threads.Just think if we had actual production records then we'd be bored to death like the mopar and Ford guys
Personally i'm from Missouri on all of em.People were doing all kinds of swaps when the cars were only a couple of years old,then thirty years later our memories burn it into total conviction that's the way it came from the factory because nobody would bother doing that to a car back then.