i am trying to find out what type of differential i have in my truck. i have a 71' GMC C-2500. it is 3/4 ton full floating rear end. this is all i know. it is original and i want to change the rear gears so it is more streetable. the truck is 2wd. i was once told it is probably a dana 60 and someone else said it was a GM 12 bolt. i don't know anything about differentials and need help finding out what rear end i have before i try to order new gears.
thanks for any help!
ronniej
