Sealer between upper and lower cowls on 65 Dodge Dart

Thank for your response. Lots of good ideas in your photos. Plus, it gives me an excuse to buy some more C-clamp vise grips! When I replaced my full quarter panels I used self-etching primer between them and the tops of the rocker panels. It was a little smoky, but it worked. I’ll try the seam sealer like you did. I’m not too worried if the plug welds are pretty because I will smooth them out a little and cover them with seam sealer. Thanks again.