As others have said get the gas gear. It's the only way to go for body work. I have two Lincolns, a SP-100 and a SP-170. Both of them are over ten years old and perform nicely. I worked for a sheetmetal outfit and we used Lincoln SP-125s to weld the seams on 4- 5Ft diameter 10 Ga. S/S exhaust stacks that went up 365Ft, plus all the 10 inch 16Ga. S/S lab pipe that fed them. Several miles of weld. The lincolns worked flawlessly.
