Not really a racing engine part, but I thought to include some sample photos to illustrate how the Magnesium Crankcase Breathers would look after the Chromate treatment. The street and racing part are similar, but not exactly the same, here is a 906 Crankcase Magnesium Breather https://pbase.com/9146gt/image/160811946 and if by chance you happened to have one available for sale, please be sure and let me know. My email: AJSERRANO at MSN dot COM - Thx!~