Latest FPR upgrade. Since this one has dual inlets, I will be able to equally balance the fuel in the rail. So effectively , I will run a line from the pump towards the egine bay. Y-split that line into 2 line. Run those two lines into the fronts of my APR fuel rails. Then have both rails tie into this FPR. Then the single -6AN return back to the tank. That makes a more even balance across the fuel rail pressure, then at one end. Also, since the APR fuel rail is larger than factory, at an -8AN diameter. This fuel regulator will be able to match that. It has -10AN ORB inlets. I just ordered -8AN to -10 ORB adapter fittings from Aeromotiveinc.com, to make the transition. This FPR was necessary for me due to the larger fuel requirements I will be needing, and that the Tomei one is not large enough to handle that kind of volume. Nor designed to balance both sides.