Alum fuel tank

[martin]

I think this ank is orginal but not sure.. Did the original tanks have rubber strips laid to support tank.. My con cern are about four deep corroded spots between the tank and the strips.. How thick are the tanks? It looks to be bout 1/16 deep. I smacked thearea with a punch to see any weekness. But found nothing...the tank was made from one sheet of alum. Bent up on both sides ..so bottom and two long sides are from one piece and the ends are welded.. The inside of tank is perfect.. There are like i said some pitting.. Can i just weld them up with filler rod... .? I hate to through this tank away.. Thanks