It maybe tuff finding one of these rear ends that is useable that was the bigest problem the these 3500 with 10 hole wheels had. I work on trucks and go to alot truck salvage yards i started seeing alot of these 3500s and looked into geting one to fix up but they almost all had bad rearends. Ford also had a truck like this the F450 and they didnt have a great rear end ether.