POR 15 is double the price of Chassis Saver, and its the same thing. They have no UV protection so I paint over them with a minimum of a spray bomb. They should be top coated within like 8 hours or so, Don't shake the can, stir only. If you get it on your skin clean it off with lacquer thinner or brake clean right away. If you don't it will be there for the better part of 2 months!