Any way to tell the differance between the 8.2 and 8.5 A-Body rears from the outside, Tube diameter or markings or something? I plan on running a spool and 4.56 or 4.88 gears and found a Chevelle 10 bolt fairly cheap.. Will a 8.5 spool work in the 8.2 housing if it is an 8.2 set up?