12T GM 3.73 Eaton Posi Case, Bare 30 Spline

12T GM 3.73 & Up 30 Spline High Performance LSD

12T GM 2.76-3.42 30 Spline High Performance LSD

GM 12T LSD 3.73-5.38 Gear Ratios, 30 Spl (Eaton Carbon Fiber Clutch, 400 LB Springs)

GM 12T LSD 2.76-3.42 30 Spl (Eaton Carbon Fiber Clutch, 400 LB Springs)

12T GM, 2.76-3.42 Eaton Posi, 30 Spline

12T GM, 3.73-5.38, Eaton Posi, 30 Spline..