New in the box Auburn 542060 Application: Buick - Olds - Pontiac 10 Bolt (Non C-Clip axle) Ring Gear Diameter: 8.2" Carrier: 3.36:1 and numericaly higher Side Gear Spline: 28 Teeth Model Years: 1964-71 http://www.moserengineering.com/differentials/auburn-pro/10-bolt-8-2-bop-3-36-up-28-spline.html $325.00 shipped in US. Payment via PayPal.