Sand it down with 400 grit and paint it with VHT high temperature engine enamel spray can [ univ. aluminum colour]. Two coats will do then bake it in an oven at 100 C. FOR 1 HOUR. Finish off with 2 coats of clear coat enamel. IT BEATS spending fortune on powder coating. REPCO OR CHEAPAUTO STORE sell it.Good luck, CHRIS PE.