Hopper111, you can use a MIG. To TIG floor pans in a hot rod would be a little over doing it IMO. Buy the floor pans, make sure they match. When welding, skip around. You don't want to weld in one area and have it warp the metal and then have that annoying "Can Affect" going on. Take your time lining it all up. Get you some vise grip clamps if you can and try to find places on the side to clamp and hold the metal. May take a while but isn't very hard. If you can get sheets of metal and have a way to cut them then I would say to make your own. You wont have the beads rolled in it but that is ok. Probably panels are best to do though to save you time.