
bigloyd,
What kind of budget are you looking at? There are several choices since automotive chassis, sheet metal and tubing walls are relatively thin, You shouldn't need whole alot of power. Assuming you already have furnished your shop with a torch,(had to plug that in in case "Dee" is reading this post) I would suggest a mig or tig machine. Depending on your ability, the mig machine will be easier to learn at first. If you are an old pro, the tig machine may be a nice choice.(all this is my opinion) As for brands, there are lots of colors to choose from as well, I prefer the name brand stuff.
Take care of them old cars,
John Wright (70 1/2 RS/SS Camaro)