Frame rail: 68-72 A REAR of Rear cross frameThe rear crossmember that welds to the back end of the frame rails on 1968 72 GM A bodies. It's usually rusted and often bent from towing another car. Correct gauge steel as original. It's probably much easier to weld in a new OE style brace than to repair your old one. Fits: 68 72 GM A body, GTO Chevelle, LeMans, Buick GS, Cutlass, Malibu.