i think the person is asking for a recomendation of a good welder that he can buy to restore the car him self and also be able to have a co2 or argon gas bottle attatched.
ive got a small SIP welder, only takes the small disposable bottles tho so thats the only downside, great for small car work tho if you can set it right (takes alot of time to get used to it and setting it!)