I'm Heartbroken. Time to face reality that my Cuda is a parts car.

Ok everyone hes got a mig welder. We can all debate what's better, but none of that matters since he has what he has, However For automotive gauge thickness panels, the thinner the wire the better. A mig with a bottle is the best for clean non splattery welds. It's still slow going, tack and cool tack and cool etc.

Flux core works too, but is a splattery mesh, requires a lot of clean up afterwards because of slag balls. Also requires thicker wire. This will heat warp the metal faster. I use flux core on my fence line and any other place that I need the portability. I did use flux core on a 1960 El Camino I restored but the exterior sheetmetal in that one was pretty damn thick compared to these cars.

RSie, I recommend you tackle the structural side of things first. For 2 reasons, 1 it make the most sense to stiffen it back up, and 2 it will allow you time to practice on welding this thin stuff without heat warping it.

I also recommend before tackling something major to post pix of the issue you have, ask advice on Fabo first. Theres probably a bunch of different ways to repair each issue, and somebody knowledgable will pop up and be able to offer advice.

I know I will pop up to help if it's something I have done, and can give advice on. I can tell you this, you need to make the car "square" before you do anything structural on it. These things are flexi flyers.