8.8" Ford Rearend Posi, Ring & Pinion Gear, Bearing Kit Package - 31 Spline - 4.56 Ratio BRAND NEW 8.8" Ford Yukon Dura-Grip (Clutch) Posi Unit (31 Spline) BRAND NEW 8.8" Ford Ring & Pinion (4.56 Ratio) BRAND NEW 8.8" Ford Master Bearing/Installation Kit