their is a thread somewhere where a guy used a metal epoxy to put a new piece back on. He cut what he needed out, matched a new piece and then simply epoxied it into place and spray painted it for rust protection. It turned out really nice. Im sure someone will find it and post it here soon.
HPE High Performance exhausts 1100 S. Plumer Tucson AZ 85719 my company owns this place and they have installed lift kits for my buddies, and plenty of other custom work. Talk to Jimmy the head mechanic and master welder he will hook you, dont forget to mention Jake sent you. If ya come by make sure I know so I can meet ya their prices are reasonable and fair