GMC Repair: my 84 truck rear end, bolt pattern, rear end

Question
Hi, i'm trying to see what size rear end do i have it is a 10 bolt it has 5x5 bolt pattern it is a 84 c-10 here is the vin if it will help 2gccc14d8e1195381 if you can help i shure wuold be grateful,thank

Answer
Patrick

Though i would need the number stamped into the right axle tube of your diff,only 2 diffs were offered for your truck they were the 8 1/2 in and the 8 7/8,usually if its a standard truck nothing heavy duty it is more than likly an 8 1/2 in diff.


ED