I installed a rds 50 gal fuel tank with a small tool box its 2 inches over the bed perfect for my fifer. Get one for a Chevy install ball valve in the bottom drain hole then a clear filter I have 2 in line up to the pump mines 74 gph . I took the neck off the fill and drilled a hole for 3/8 brass barbed below the vent tube very easy to braze. Wiring to the pump relay ,long toggle switch wired to a fuse then to the battery every thing is loomed ,On my lml there is a cable right under the drivers side front pull the caper up and punch a mall hoe from underneath into the gourmet to run the wires under the dash then silicon the punch hoe.