Torsen zexel posi unit out 98-02 Camaro is the best bang for the buck it's 28 spline axles so STOCK 7.5 AXLES WILL NOT WORK you would need some Moser 28 spline axles cost 260 shipped or GBODY STOCK 8.5 rearend axles out a GN OR 442 WILL WORK there kind of hard to find but Moser would make better choice to give you a more strong er rearend