Must have been the challange, I suppose, the cost alone would not be worth the weight saved, plus, one bad or questionable weld, and the deal is done. As far as welding, it's about the same proceedure as used on some aluminum, or stainless welding that has to be certified, takes a lot of argon, and you don't have to be in it, you just run it thru the pipe, or tubing you're welding, and when you're done, the inside looks just like the outside, no burned edges inside. If you're flowing say 18-20 CFM on the outside, you need to run at least that much thru the inside. It's been a long time since I've done it, and with the improvements in tech and equipment, I'm sure it has gotten easier, but I wouldn't look for any such chassis for sale, anywhere soon. Does look nice, and who would want to paint it, anyway? Bob!
