I'm also looking into buying headers & having them coated. I'll check my racing sources to see what the pros recommend. I've seen a few other companies mentioned here as well. Hey, I used the search function!
I just tried to contact the Jet-Hot people, but their email link doesn't work. Guess I'll have to call. I also wanted to point out a few typos in their site (can't help myself--I'm a publisher). On their FAQ page, they say "better then chrome" in two places. The dead email link and typos don't exactly build confidence, but then (than?) I suppose their job is to apply quality coatings, not write websites.
RC