Where can I find a chrome or polished stainless oil filler cap? I have a 6 cyl chrome valve cover, the opening is 1 3/4" ID, 2 1/4" OD with tabs on the cap that are bent over to engage the external lip of the valve cover. I've been to TRF, Victoria, Moss, Rimmer (they have the galvanized type), Sportscarparts, Amazon and e-bay, etc. Anyone know a place that carries these? I would like to replace the dingy galvanized one that is on there now... Thanks!