Welders?

You can do anything to a car with a 110 volt welder, but it needs to be a MIG and NOT a flux. You need the gas regulator with it so you can have the Argon/Co2 shielding mix. Don't let anyone talk you into a 220. It's overkill for an at home hobbiest. Pay attention to the duty cycle. The higher the duty cycle, usually the better the transformer and internal components. You'll also want one that uses the common Tweco torch tips so replacements are easy to find.