8.5" GM 2.73 & Up Eaton Posi Case, Bare

8.5" GM 28 Spline LSD, 2.73 & Up, W/Eaton Carbon Fiber Clutch, Uses LM102949/11

8.5" GM 2.73 & Up 28 Spline Posi

8.5" GM 2.73 & Up 30 Spline Posi

Large Journal

8.5"Uses LM102949 & LM102911 Bearing & Race

8.5" & 8.6" GM Rear 30 Spline Truetrac  (Large Journal)

8.5" & 8.6" GM Rear 30 Spline, Helical Gear Limited Slip Differential

8.5" GM 28 Spline LSD, Oldsmobile

8.5" GM Front Truetrac Posi 28 Spline (Uses LM 102949 & LM102911)

GM 8.5" & 8.6" Eaton Posi Complete  30 Spline (8.5" Needs Bearings, Large Hub)

GM 8.5" Eaton Posi Complete  28 Spline (8.5" Needs Bearings, Large Hub)