when we blast, its down to bare metal, the blow it all off with air and shoot your epoxy, or i guess roll it, it just wont look as nice, but you can get a cheap 40$ gun at home depot. and as long as you put a good two to three coats of epoxy anything should stick to it. and the imron is some mean crap and liks to stick to everyting, even my hairs when i shoot it.. haha
let me send you some pics of a 55 t- bird frame, motorcycle frame, and firebird front clip and dash. they were all satin except thr bike frame was gloss black that i did 3 weeks ago..