Has anyone ever used Nason 2k urethane paint to paint the frame of a truck? Just wondering if its worth the money i paid for it. I used the Nason Chasis Black and didnt like it and i hope this is better. Also do i need to prime the frame first? I will be using phospheric acid to prep the metal first and it is down to bare metal. The guy at the paint shop said it would be fine. any ideas?