More important than the primer choice is the sandblasting part. DON'T DO IT!!!!

Listen, sandblasting sheet metal is something that very rarely works without TOTALLY distroying the metal. Click on the following URL for some more info. http://www.autorestorer.com/boards/viewtopic.php?t=1671


1948 Chevy Pickup
Chopped and sectioned
owned since 1974 when I was 15.