Stop in for a cup of coffee

George, I am not a body man, or even pretend to be. I want to switch hoods from some of these 65 Belves I have here. The good one has some surface rust on the underside. I want to clean/strip it underside and topside, then paint it in Hot Rod Black to go on my Post car. What is the best way to get the rust off the bottom? I know I can DA the top..