[jdean]

I also had good luck with Dupli-Color over ceramic coating when I had a car with white pipes. Make sure it is clean so you dont rub impurities into it, then just sand lightly with fine grit, about 400, (or Scotchbrite) enough to dull it. It runs easy so do 2 thin coats. Too thick and it may flake on first burn in. Not a big deal because once it is cured by heat, to touch up you can sand lightly and re-spray a small area.