Mine is a low profile toolbox wth 60 gallon tank. I plumbed it straight to the fuel filler line with a quarter turn valve. No pump, gravity fed. Line-xed that puppy along with my bed and I absolutely love it. Between it and my regular tank I drove to Southern Cali from middle of Missouri. Filled up here and Alburquerqueuqueudrfe, New Mexico. That was it. Highly recommend it.
2005, LLY, Crew Cab, 4x4, 140,000 miles and counting.
Mods: , EFI by Idaho Rob, S&B CAI, AD II 165, Edge CTS, Straight 4" exhaust, Eagle Alloy's wrapped with Nitto Terra's 295/75/R18's, LBZ mouthpiece, EGR blocker plate, ATS 60 Gallon transfer tank/toolbox, Line-xed transfer tank and bed, Clifford Remote start. HD tie rods,arms upgraded and braced. Bilstein 5100's.