My buddy has one on his Toyota p/u (several years now).
He can't weld for shit but, I've made trail repairs on other people's rigs (welded my broken tie rod in the Little Sluice.....right after grenading a Dutchman Motorsports rear axle shaft but, don't get me started on that subject
) on several occasions.
Anyway those things are awsome and Pat Gremillion, the owner, is a super nice guy to deal with if you have any questions or problems.
I've heard that Mobi Weld is another excellent unit and allows you to utilize your original alternator.
I myself can't afford one:-[ so, I'm (eventually%)) building one using a large case 100 amp 1G alternator--------Hans
PS, 6013 seams to work really well and produced strong smooth welds