350, 590 and 990 gallon fuel tanks are not approved for highway use, they are manufactured for off road and/or farm use only.

990 Gallon Fuel Tank, 20 GPM Electric Pump with 20′ Hose/Auto Nozzle/#10 Micron Filter, 20 GPM Flow Meter, Charging Kit with 12v Battery, Removable Spare Tire Mount, Interior Lighting, Flood Light Tower