Larger replacement fuel tanks for gas trucks

[FireGuard]

I had a larger replacement tank on my 03 Dodge Cummins which made it nice for traveling.
I’m seriously considering a gas truck and like the Ram Hemi but with a 32 gal tank range is limited.
I’m researching the new Ford 7.3 and you can get an optional tank around 50 gal.
The tank manufacturers don’t list a tank for a gas truck so I’m wondering if they don’t make one and if there is a reason because of gas vs diesel.

[fj12ryder]

Oops, sorry.

[FireGuard]

I’m looking for one to replace the factory fuel tank.
I need a clear bed to carry a truck camper.

[fj12ryder]

They're out there. Here's one of the more expensive companies, but there are others, just Google it.

Auxiliary gasoline tanks.