Besides swapping the factory 26 gallon for a factory 38, the ONLY option you have, without taking bed space, is a tank made in Australia holding 46 gallons. An outfit from down under “Long Range Automotive”. Transfer Flow discontinued the tank they made for the Tundra. The LRA tank is about 1500.00 with a typical 200.00 dollar freight charge. If you can not do the install figure 3 to 4 hundred for that. “Cruiser Brothers” is, as far as I know, the only US distributors of the LRA built tank.
