BTW, these 2-part body glues made by 3M do work great...BUT -- rust can
still work it's way in behind them and pop loose the metal you
previously glued. BTDT. If you have a way of totally sealing around the
edges of the glued area, it could be successful. But there is only one
way to get rid of rust completely, and that is to replace the rusted
panel. Cut it out and weld a new one in. I believe the lower panel is
still available through some aftermarket sources.

Karl