I have done them. They are not perfect but they are better than rust holes. I started off by marking my old quarters and cutting them off with extra left in place. I kept the original top body lines and went from there. I then trimmed the Goodmarks wheel lips to be closer to original size with 1" painters tape. They are quite a bit bigger. Then I started at the bottom clamping it in place making sure to get it tight to the existing one and screwed it in place. Then cut through both and tack welded a little at a time. Is it the right way? Not sure as I had never done it before but it did turn out well. Somewhere I have pics with the quarters off I will upload if I can find them
View attachment 1715797994 View attachment 1715797995 View attachment 1715797996 View attachment 1715797997