Ve motor i ran Isspro ev2 (Awesome gauge, well worth the money) 30psi, pressure sending unit installation spliced right into my air dog lines, just ran a few wires and i was done, took about 30 min ti install.
I got a 40 psi Isspro electronic EV2 gauge. Its nice to not have the fuel run in the cab since most competition rules won't let you anyways. A little pricey but well worth it and Isspro backs up there stuff real well. I just put a T in my 1/2" lines from my airdog and put it there.