Gordo2: I have a 1983 911 SC, putting PMOs on it. My PMOs have the short manifolds, do you think I'll have issues with the shifter linkage and need to swap out parts?
I posted a reply to your pressure issue. but I get the feeling that you didnt see it. I had the same problem with the PMO pressure regulator. Could not get it to drop below 5 psi. I, like you tried everything with no improvement. finally I switched the AN fittings on the return line to the barb ones. I now have 3.5 psi. Those fittings must have some restriction to them. Although in looking through them I certainly could not see one. Good Luck! Hope this solves your problem.