Please verify that this will work for your application. Good used 28 spline 3 series gov lok posi. good posi, both bearings need replaced. internals are in great shape. This 3 series Limited Slip is For 89 and newer GM 7.5, 7.6, 7 5/8 ten bolt rearends with 28 spline axles, 3.23 to 4.56 ratios. will be cleaned before shipped. feel free to ask any questions