what por15 to use for rust
 

Ok my seven has been diagnosed with cancer. Thankfully its in the very early stages. After watching all 35 episodes of aaroncake's cosmo build, ive learned to sand it away and send that rust to hell (since sheet metal is not needed here lol), and use por15 to prevent any further rust. Now ive looked for the por15 but there are a few different types of it and i want to make sure i get the correct one. If anyone can point me in the right direction i'd be greatful

If you've already gotten the rust off, just primer it then paint! But if you really want the por stuff I googled Por15 Rust Inhibitor Coating.