Nobody else has offered any help yet, so here are my suggestions.I am working on a 39 car, and I understand that the same bullets are used on your burb.I finally got 2 good ones, but have a couple like you describe.For the broke off studs, I figured I could cut it off flush, drill it out, then use a small bolt and nut to hold it. Nobody would know the difference.For the tab, you have one for a pattern.Bend up a little piece to match, drill and tap, and rivet it in place.If you go to ebay and look under 39 chevrolet parts, there are reproductions listed right now as well. Hope this helps Jim.