I think I'm going to need to buy a welder to fix up my Mach, I've found fiberglass repairs in a couple of spots in the engine bay, and a nasty looking patch on the floor, as well as a little rust hole in the door jamb. And thats just what I've found so far. I'm looking into buying a 120V MIG setup, and am trying to get the most mileage outta a buck (hell, if I wasn't on a tight budget I sure wouldn't be doing this miserable body stuff). How much of a welder do I need for something like this? I'm really interested in the Campbell Hausfelds since an 80A can be had for a little over $200, but am also looking at a similar sized, but more expensive Lincoln, as well as a Craftsman. Anyone have any experience with the cheaper units? Just wondering if they're junk or not. Also, how much does it cost to rent/buy the gas and tank?