I would get a mig.
I have used mine to repair and restore many cars over the years. I have also used it to build skateboard rails, fix bikes, and build tools. I just used mine to graph an Allen wrench to an old Chinese ratchet to brake the rotors lose on my 560. This took about 5 minutes to build.
I purchased my mig at Sears about 10 years ago for $300.00. The tank was another $75.00. It has paid for itself 100 times over.
1988 560SEL, Green, Chrome wheels.
2000 Suburban, 20" wheels, DVD, wood grain dash (wife's car).
67 Beetle euro, Lots of Empi parts.
69 Beetle conv, 1980s cal look.