Rebuild Regearing a Chrylser 8 3 4 sure grip

Dodge chrysler 8.75 3.55 ring and pinion sure grip posi lsd gear pkg 489 case we recommend using standard 80/90wt (non-synthetic) oil with posi additive. Manufacturer Part Number EG C8.89-355- ZP PC8.75-SMTH WK C8.75-F OILADD. Requires 29 Spline Pinion Yoke. 1- Chrysler 8.75 3.55 Ring & Pinion Set (Elite Gear).