Regardless of what others have and love the fact is for a single restoration and even more an inexpensive welder such as the Eastwood 135 (dirt cheap on sale) has variable amperage settings and the duty cycle is more than adequate for home use. Do not use a flux core mig. The lincoln and hobart and miller welders should hold up better with heavy use but for a home built weekend project the new cheaper welders will work just fine.
Rick
Rick