Paul's Chrome Plating does that I think. I saw an episode of "My Classic Car" TV show and they were showing how they have perfected a technique to put real chrome on plastic in the same way as steel. They say they are the only ones with the process becuse they invented it.
The link is to a place that has a link to them. Their site has music on it and it always freezes up my PC.
Allan
http://www.musclecarrestorations.com...ls_chrome.html