If you want to carry more fuel for your truck, you should look at the Titan After Axle Auxiliary Fuel Tank System. This tank is generation 6 & mounted to the frame behind the axle. The tank comes with galvanized mounting straps, fuel lines, and wiring. The fuel from this tank can be transferred to the main tank from the comfort of your cab. This product goes through Titan's vigorous testing process, so you know it is a great product. The lifetime warranty is proof enough of the quality of the product that you are receiving. | TITAN After-Axle Auxiliary Fuel System - 40 Gallon 4020217