We wanted a larger and less leaky fuel tank than the stock one mounted under the driver seat. Summit Racing has a lot of fuel cell size and shape options. We found that this RCI 17-gallon aluminum fuel cell (PN RCI-2171A) fit easily between the rear fenders in the back of the Jeep. It is 30 inches long, 7 inches wide, and 17 inches tall. The narrow width and good height will help ensure that the fuel pump doesn’t starve at excessive angles off-road. It features -8 AN outlet, inlet, and vent fittings and comes with a 0-90 ohm sending unit. We cinched it in place with 3/4-wide 1/8-inch-thick strap steel.