Moser Engineering joins the 48 Hour Camaro Build. We are putting a 12 bolt rear end under the Camaro. All Moser 12 Bolt Housings are designed and manufactured in the U.S.A. using Moser Engineering owned Casting Boxes. Moser offers a 12 Bolt Built to Order Rear End Package that you can order online. Package includes; New Moser 12-Bolt Made in the U.S.A. Housing, with OEM located mounting provisions, seamless steel tubing (3″ O.D., 1/4″ wall), custom alloy axles (30, 33, or 35 spline), bearings, studs, seals, heavy duty retainer plates, new housing ends, t-bolt kit, differential, pinion yoke, ring & pinion, rear cover, set up with Timken bearings.