It was only time before GM cars would show there heritage. We have designed these level 2 axles to handle 400HP and are ready for you to beat like an old Camaro. The system consists of both axles with 4340 double tempered centers. The outer C.V. is 8620 and carburized for an extra shot of strength, the inner ends that have been normalized specially re-heat treated, de-stressed and tempered. A 32 spline center (stock is 29) these units are a superior axle to stock and will do the job. Available in early and late design's (price listed is for both left and right axles) if you need separate axles please call the factory. Take it to the next level with Driveshaftshop.com. All motor sizes use the same axle's (ours) for these years