GrumpyTrkr
You are right that Dan's handles these, BUT only for a long bed. I am putting a sleeper rig on the truck and don't have the bed space for an aux there. It has to be in the truck. The transfer flow 54 gal. extends into the wheel well opening on a short bed. I don't know about the ATT but every other company I have looked at positions theirs the same way.
Ideally, I would like to get a tank to fit where the spare tire goes. But I understand that this is no longer allowed?? even though it is between the frame rails; unlike the transfer flow that is between the skin and the frame.