Originally Posted By UCUDANT
Finding the grommet is fun smile The PCV is 3/4 where it enters the valve cover. I ordered (am awaiting) a grommet online that is 3/4" ID, and 1" OD. Since I have aluminum valve covers Iliked this one as it appears deeper and I will trim the lower neck if I need to.

http://www.ebay.com/itm/Ford-Mustang-PCV...2-/111669199849


I used a Moroso grommet with a built in oil baffle. Here is what it looks like mounted in my valve cover.

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