JEGS 630610 GM 10 & 12 Bolt Rear Axle Disc Brake Conversion Kit for GM A-Body Cars is an easy bolt-on solution for upgrading your GM rear-end to disc brake performance. This kit is designed for GM rear axles with coil springs and shocks that mount on the backside of the axle housing.
JEGS 555-630610 GM 10 & 12 Bolt Rear Disc Brake Conversion Kit Includes:How To Measure Rear Axle Hub Flange & Register Dimensions