The nice part is Zero-Rust is really great paint. 10 years ago I used POR-15 for most of my chassis, but IMHO found that Zero-Rust works better.
http://zero-rust.com/?referrer=googl...FQYHbAodHX2x2A
And here is where I buy a lot of my paint supplies. They also have an excellent painting forum:
http://autobodystore.com/new_page_1.htm