Motive Gear Ring and Pinion - 3.42 Ratio - 30 Spline Pinion - 8.5 / 8.6 in - GM 10 Bolt - Kit - Part Number: GM10-342Buy with confidence at Drag Racing Wheels for the Best Pricing, Inventory and Customer Service on Motive Gear Ring & Pinion GM 8.5/8.6 3...