Thanks Scratch! The rearend I bought came out of a 68 D100, so it's the 4.5 bolt pattern. My cousin used to have a 74 Powerwagon with the 5.5 bolt pattern, but it's long since been deceased! Only thing left of it is the original 318 sittin in my basement....lol. So, when I get around to doing this, all I need is new 82-84 rotors, correct? They will work on my existing 88 spindles, right? The rear brakes I got figured out.