I went with Jet Hot Coatings
Jet Hot Coatings I coated the Sho Shop Y-pipe, Catalytic Con., Cold air Intake, and will be shipping out the Upper Intake Manifold this month. There work is very impressive. I have some pics if youd like to see. (Just let me know)
I noticed lower engine temps, and for instance the cold air intake can be touched after an hour of hard driving. The sterling finish looks like Chrome.