I've never found any high temp paints that stand up very well.
I used a product called Black Satin (BHK) you can spray at home from TechLine coatings. It's actually a ceramic coating. You need to media blast, mask, and then spray in a small paint gun. It air dries and cures fully under exhhaust heat. I was a bit skeptical at first but I must say after 5 years it has really held up amazingly well. Here's a recent picture.
http://www.techlinecoatings.co...-system-coatings.htmBest,
Kelly