Well I didnt know you could use the disc set up from the 2000s on the 80s that will make good use out of the 01 camaro rear I have laying around, we have a 81 z/28 that I can use it on. Is it a bolt on deal or lots of fab work required? I have a 54 gmc lb that I tryed to use the 01 rear in it is 65inches and that is too long, I then picked up a 89 350 iroc that had a disc brake 3.23 posi in it and it is going in the truck, it is 62inchs and fits great with the wheels and tires I have on it