All of the above will work, once you carefully get the skins off the dents can be hammered out. I had to do this on my 42' Deluxe coup. I was only 16 and Dad got it off. Used his body dowels and a leather hammer to pound out lightly two hundred taps are much better than three hits. Today ya'll need to try Pegatanke, I have been a JB Weld guy for 50 years JB didn't hold on the pot metal of my 46' Cad. carb. It is stronger than anything I have ever used, comes in clear,black & white. Used it on the accelerator stub out on a Rochester AFB a year ago, still going. I believe Dad boiled the cap first and used welding gloves. You cannot use flame or dry heat because the zinc fumes are very toxic. I will ask my older brother and get back ASAP, he may know. Doc