Increase the fuel capacity and driving range of your 1999-2001 Ford cab chassis with an auxiliary or larger replacement fuel tank from Transfer Flow. For 60-inch cab axle chassis, a 30 and 34 gallon fuel tank is available. For 84- and 120-inch cab axle chassis, Transfer Flow offers a 33.8 gallon fuel tank. Auxiliary tanks operate with Transfer Flow's Trax-UFS™, a computer- controlled system that automatically transfers fuel. A dash-mounted LCD displays the gallons in the main and auxiliary tanks, and shows when fuel is being transferred.