I currently have access to a 1970 chevelle ss 12 bolt rear 4 series carrier. Ive read multiple forms about swapping these rears into a g body (im doing an 86 cutlass supreme 4 door) but ive yet to get a clear answer. I know for sure Id need to change the upper control arms for the adjustable ones, but other than that, is there anything else that needs to be changed for the axle to bolt up? thank you.