We’re seriously excited to have this unit in the 48-Hour C10!! This rearend features the 9-Plus Centurion® housing and 31 spline performance axle package built to the stock overall width (62.125″) and pinion offset (.5″) for the 1963 thru early 1970 trucks. Housing includes all 3rd. member studs installed and the Torino style late model large bearing housing ends. Heavy duty GM truck trailing arm pads are included and installed at stock specs. (40.375″ C-C @ 12 deg.). Axles include the stock 5 on 5” wheel bolt pattern drilled in them, 1/2″ wheel studs installed, ¼” thick heavy duty bearing retainer plates, and tapered Timken style wheel bearings pressed on.