8 3/4 rear

I recommend dr diff

I agree, i got mine from him.
Great guy to deal with, good prices, and fast shipping.
I paid $205.00 plus shipping for the gears alone, they were for a 489 case and are 3:55s. They are made in the U.S.A. by US Gear, the other ones he sells are made in Italy are cheaper by about $25.00 and aren't quite as good. (so he says)
Should be the same price roughly for yours.