Basic Installation Kit - GM 7. 5" (77-96) & 7. 625" AxlesContains Pinion Shims, Crush Sleeve, Pinion Seal, and Cover Gasket. (Image typical - Kit may vary from image but will contain appropriate parts)Pit Stop USA offers Ratech Basic Ring & Pinion Installation Kit - GM 7.5" (77-96) & 7.625" Axles 408K at low everyday prices. Be sure to check out all of our products from Ratech including Ratech Bearings and Seals and Rebuild Kits.