Traveler II
There are no stock-fit aftermarket tanks that increase space, but there are some new ones of the same size (~18 gallons). I really did like the idea of having a 50 gallon capacity, but I could live with Jerry cans that I've already planned for (~20 gallons). I have also thought about a custom tank that fills every nook and cranny between the rails, but I wasn't sure how good a solution that would be.What kind of room do you have between the frame rails and bed sides? I would NOT suggest putting the fuel tank of any kind in the same area you will be sleeping.
What is you need for the extra fuel? 18 gallon tank seems decent. Personally, adding an auxiliary tank can get complicated in a hurry. For the time and effort, I would simply add a few jerry cans to the bed sides.
Not being a Jeep or FC person, is there a larger tank available (original equipment or aftermarket) that bolts in place of the stocker?
I know being in the same area, enclosed, with gas is not a good idea. Aw well, Jerry cans it is!