dont know about the powder coating, i'm sure it could be done since that stuff holds up really well and has a heat factor of like 500 degrees F I believe but the main thing is the powder tends to get everywhere, even if you try to seal up everything I always hear stories of it getting into the cyclinder and stuff. I have had and also seen great result using regualer engine enamel thats meant for cars/trucks, as long as everything is prepped good it normally comes out very nice. Just a thought and would prob be cheaper. What color were you thinking about doing?