I have a NOS brand kit that I am finishing up the install on. One of the last few things I have to do is hook up the vacuum lines. I have been told to hook one up to the small line at the back of the engine that runs from the fuel pressure regulator to something else. What I need to know is where does the other line go? After the nitrous regulator is a Tee. The instructions that came with my kit are for a mustang 5.0 and all it says is the one going off the blue nut goes to "existing vacuum line" and the other says it attachs to the fuel pressure regulator, I can barely see my regulator but I see no where to hook a line. Can someone help me out?