There's a place about 45 min from my house called New Image, they ceramic coated my TTI Hemi headers for $275 and they came out beautiful.

I used to use Eastwood bright silver brush on header paint, I used a foam brush and that little can probably could have covered 12 sets of headers. It never flaked off of any of my headers.

I am not a fan of header wrap, seems to just rust out headers.