I cannot find the link at present, but I recall looking into getting some "body tape" which manufacturers now use to attach plastic parts (mouldings, bumper guards, splash guards, etc) to many automobiles now. I seem to recall it is a 3M product, doublesided adhesive, thin, and very strong/durable. I think that I would be tempted to try that first off, as long as the metal pieces I was trying to secure were relatively thin, say, less than 1/8" thickness.
Personally, I think I might still go with just polishing up some thin stainless steel to give it a try first for looks before investing in the costs of custom chroming something, which if flexed, knocked could start to peel.
