I just did this on my turbo n42 build. Find a complete internally oiled cam setup, n47, p79, p90 non hydraulic. Take the cam towers, and cam, associated rockers and lash pads, it will work just fine. Just MAKE SURE you use the proper cam towers that came with the internally oiled cam. I have some internally oiled cam towers if you need them. Paypal only, $40 shipped - sk84life1122@sbcglobal.net