I bought a set of used headers and they are a little rusty down by the collectors and spots on the tubes. I am going to use a wire wheel on them to get the rust off, but will I be able to paint them or will it just come off? If I can, then what kind of paint should I use?

Just make sure you get the HIGH HEAT paint! It will come off after time. But I would paint them if there bare metal. It will make them last alot longer.