as long as that welder is in good shape give it a shot. Throw the link up so we can check it out. For your needs you may just want to go with a good mig.
Mig is good for lots of stuff. I have mig'd aluminum, doesn't look as good with a tig but form follows function most of the time. And with enough practice it can look ultra clean.
can you do heavy jobs with mig ? as in roll cages and exhaust ?
oh heck yes.... (in a most monotone voice) i would say 50% of people mig their cages (and its legal) and 80% mig their exhaust.
i would go with any of these companies when dealing with a gmaw (mig) or gtaw (tig) welder: lincoln, miller, hobart, linde (mad old skool), thermal arc. These machines are known to last. I have had my lincoln for about 3 years and its in tip top perfect running condition. Not one hiccup as of yet.
But again (like mattback said) you most think of other expenses when dealing with a tig welder. Prepping supplies, gas ,bottle rental or price of a new one, consumables, cups, gas lenses, tungsten, bench grinder to sharpen tungsten if you don't have one, regulator for the bottle. but its cool once you get it
