You could probably chrome your fork ears, IMO none that would be worth the time though. The CB350F fork covers are probably the most unique for the entire CB line up that year.
If your dead set, find a local chrome shop and stop in with the parts. He'll probably do it a lot cheaper if you totally strip them first and polish them to a mirror finish on a wheel. Also keep in mind that the metal needs to be straight and scratch free with absolutely nothing but metal (so no bondo etc.)
GL
