i like my hobart 180 handler, anything heavy i start up the lincoln classic 250 and use a stick, usually a 7018 with a p5 root or my heliarc root depends on what i'm welding, but a 180 handler will weld up to 1/4" and is plenty for a bumper, and you can buy them at tractor supply co. i got mine on a sale they were having and i think i paid $325.