I know this is against the grain for most toy folks but I am putting in a Dana44 rear out of a '95 Isuzu Rodeo. Same width as the IFS rears plus it comes with disc brakes, 4.10's and matching 6 lug pattern. Picked it up For $100 at the local pull-and-save. I haven't checked the perches yet but it was cheaper than putting discs on a toy axle.