1971-1972 Chevy and GMC; Shortbed Rear Axle w/ Tee On Cover 1/2-Ton SB 12-Bolt SWB Installed using a bracket and fitting attached to the rear axle cover. BRAKE LINES REAR AXLE SWB w/TEE ON COVER 1971-1972 Chevy and GMC; Shortbed Rear Axle w/ Tee On Cover 1/2-Ton SB 12-Bolt SWB Installed using a bracket and fitting attached to the rear axle cover.