I installed a 91-gallon RDS rectangular aluminum tank in the bed of my F250 and love it.
I put a water-and-sediment fuel filter to assure clean fuel coming out of the tank, and a 13GPM fuel pump with a nozzle so I can refuel other diesel equipment with it, along with the F250 tow vehicle.
It's great to have a fuel range of 1500
miles and to be able to pick the best prices and locations for filling the tank. I often refill while going out for dinner after parking for the night, thus allowing my mid-day stops to relaxing and resting for a while.