Before you go out and buy some exotic polish, please take this note from a
guy who has probably polished a hundred of the things in his life. Any good
chrome polish, such as whatever you have in your garage, will polish those
cars to a virtual mirror finish. Put on a good thick coat, let it sit for
a minute or two, then rub out the top with an old undershirt. The rib
sides, take a soft toothbrush to it and clean it out while rubbing with the
slats. Be prepared for a LOT of gray dirt to come off, but when you are
through
you will be able to see your fingerprints on the surface.