Yukon Gear Minor install Kit For Model 20 DiffYukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush. This Part Fits: Year Make Model Submodel 1968 1970 American Motors AMX Base 1978 1979 American Motors Concord Base 1979 American Motors Concord DL 1979