Just installed this to make sure fuel pressure is still in spec w/ the upgraded fuel pump:
This is where it goes, you remove the bolt that goes through the banjo fitting on the top left side of the fuel filter
and this is what it looks like when your done:
turns out that the fuel pressure is 1 psi too high w/ the vacuum hose disconnected(stock is 47, mine is 48), and 2-3psi too high when the hose is connected. I dont think this should be too much of a problem, gotta do a little research to be sure.