B3M2W5i, go with the Duplicor engine enamel. its heat resistant up to like 1200 degress celsius (1500 farenhiet). its what im gonna use to paint mine. Duplicolor makes quality stuff. I painted my front bumper on the Mercedes with it (not the engine stuff) and so far it hasnt chipped,peeled,fadded or bubbled and it sits out in the sun and the cold and all weather