[Lukesportsman]

As an amateur (installing my 5th set of quarters, at this moment on a Buick GS), Milt's thoughts are so accurate. Good luck getting the helmet up, tip down and hammer and dolly ready before the MIG weld cools.

I don't think any amateur should try Oxy/gas on cosmetic thin metal welds.

Use thin wire in your MIG (.25), this is handy.

Take your time, check twice before stitch welding after the tacks. I prefer Clecos to attach panels. You'll likely be proud of your task afterwords.

Grinder: take smooth long passes and don't try to grind down small sections. It may seem to take longer but less likely to form gouges.