I believe a guy on the Bonneville forums has used that Jet-Hot coating service (and very happily I might add).

Best of luck Tadd, I hope you can end up with what you are after

 

Last year I was really considering the DT headers but I was not going to do it unless I put on a Cat-less down pipe too. I never got around to it in the end. I was also told the car would lose some low end power and although it would be a good mod overall for the car to breathe, it wouldn't give this engine that much more power. They did look nice on the ls4 at the nationals.