Wally,

I have seen a very nice plywood/west coast epoxy black tank at international rally. I think the metal one would be problematic on thibgs sticking, it would get hot and cook things inside. I think the inside being a good smooth plastic or epoxy is key.



Whatever you do, if you figure out how to make a good high capicity tank, make two. I want to figure out a high capacity tank, But mine is only a year old.