I finaly found a rear end that i should be able use for my suburban its on a 90 c2500 its a 9.5 14 bolt sf with a gov lock and 6 lug. I know ill have to move perches and shock mounts but hows the gov lock in these id assume there beefier then the one in my 10 bolt plus the price is right for it. My goal is to rebuild truck for towing and show. My intentions are somewhere around 400-450 torque and undecided if wanna build a 350 or put a 454 in it