yes they make high heat clear coat, the same clear i use on my plasctics since its gas and oil resistant, duplicolor engine enamal clear.. heat resistant to? 500?-700? id have to look at the can, but it will holt up to the sielncer, or a mag/ aluminum polish will work just fine, granted you will have to re ploish it now and then..
cool idea, work with what ya got!!! thats how i do it!!! nothing wrong with the stock silencer, its un capped, and will flow about the same as a slip on, just not as nice of sound, put a black front pipe one and fk with ppl! lol
after your almost done with the sanding and polishing, before your ready to hit it with metal polish, take some 0000 steel wool to it, that will pull some of the fine scratches out