"Auxillary" Fuel tank vs installing a new/larger tank

Thank you for the replies. The OEM tank is 26gallons, so not a lot of range there. I didn't want an 8' bed because most of the time, there is no trailer/hitch and the 6'4 is perfect for everyday use... so the challenge was seeing if there was an option/solution that I hadn't seen. Guess it is either install a new tank (52g) or just deal with the auxillary tank in the bed.

Thank you for taking the time to help out a new forum member.