Ive got a new rear

COOL !!! (on the rubber)

Weren`t you a little nervous handling your new diff with such a light chain ?

Trick is surely THE Olds diff source. I've picked up a 3:42 and a 3:73 from him over the last couple of years and would buy from him again. One little niggling issue though - the "new" backing plates he uses do not have the 'brake adj slot" punched out (if new plates were a part of the pkg). I ended up drilling them out and contouring the oval with a dremmel and a stone. Cant' exactly tell from the pics if Oldsproject has the same issue but a cold chisel wasn't making progress on mine and the risk of bending them wasn't cool on an otherwise perfect package. I didn't notice the issue until diff was installed and it was adjustment time - aaarrrgggg.