Yukon Gear Minor install Kit For GM 7.5in Vega & Monza 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. (with Supershims). This Part Fits: Year Make Model Submodel 1975 1980 Chevrolet Monza 2+2 1978 1980 Chevrolet Monza 2+2 Sport 1976 1980 Chevrolet Monza 2+2