Shipwright,
If you have room in your shop why don't you keep the stick welder AND buy a little mig machine. Field conversions seem like they never work quite right to me. If the stick machine is AC/DC, you could make a neat TIG unit out of it. Sears has (or had) a nice frequency unit, and gas cooled tig torches are dirt cheap. Just think, you could tig stuff together just like Pauli, Vinnie and Big Fathead Paul!!
Stuart.