I am just starting on primering my Chevelle and i purchased dupont Nason epoxy primer which as my first coat of primer. I had got the car down as close as possible to the metal really to the original paint and some spots was metal no what will be the best primer to use in the Dupont Family i can use for Sanding to get the body straight.And also give me some info on a great primer sealer.

Dupont has many good primers that would work well. URO prime has been around for years and works really well. There should be an econoical urethane primer avaialable in the Nason line as well. Ask your paint supplier for suggestions. Stay away from the Laquer primers. Chroma Premier Sealer is one of the best sealers available but expensive IMO.