I will look up what you have recommended. I would like something that can be applied over sealer or primer.Keith, A non-hardening sealer is what you need. SEM has both 2K and 1K black seam sealers that will work fine. I used Transtar 4162 1K on mine with no problems. No need to use expensive 3M products. If you look at pics from original cars you'll see the coverage widely varied. Read the tech sheets. Some products require bare metal only application.