Yukon Duragrip posi for 8.2" Buicks, Olds & Pontiac with 28 spline axles.

The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects. This case is drilled for 3/8" bolts. Some factory gears use 7/16" bolts. If your factory gear uses 7/16" bolts you will need to drill out the ring gear bolt holes.