Many people have asked about getting plastic rechromed. Here is a place: CV Vacuum Platers www.cvvacuumplaters.com I have seen their work in person...excellent stuff!!!
Does the part have to be plastic? Can they do fiberglass? I guess I would get further looking at their site... Don't bother answering. Just think of my questions as thinking aloud. Can you tell what I am considering? ...fiberglass bumpers with chrome plate...