Rear Subframe, Rear Portion 1973-74 B-Body ART-17-2 A common problem is that when trunks rust, these frequently rust from the inside out. This is a quick way to reinforce high-performance Mopars. Like all our slip-on kits, it is a contoured U-shaped part that fits up against the corner of the original frame. This kit is made of 13-gauge steel.

The full rear frame rail is also available.

Installation instructions are available here. (Instructions will also be included with shipment.) $159.95/side — $309.95/set