Chad, I had those valve cover's and finding a grommet is tough. The aluminum is pretty thick and I never did find a grommet that would work so I made my own. I have a few twist on breather's I will never use again. If you want one I will ship it to you with the grommet I used. You will also need to make a baffle when you do the pcv. I used an old carb butterfly but and peice of sheet metal will work. I battled with this for 2 year's until I got it so the breather's wouldn't get saturated and drip oil everywhere. If you still haven't got the job done let me know and I'll save you a bunch of hassle.
