I took my 2000 F-350 diesel dually to Inuvik from Arkansas in 2012. 35 gallon tank and no issues with fuel along the way. We took the Dempster Highway up which was our biggest fuel concern but even that was not an issue with a fuel stop at the halfway point. We carried 10 extra gallons of...
Jman, I picked one up at Academy Sports for around $15. It has two 12 volt outlets and plugs in where the trailer wires normally would plug. Mine does not have power to it if the truck is turned off but I'm sure you could wire it as you see fit.
camper shell
Not sure if this qualifies as a "regular" but it is a camper shell. It is a Tow-T-Low shell and the top raises like on a slide-in pop-up camper. I haven't really done anything inside of it but the back pops off and I can ride my 4-wheeler inside and still have the overhead bed...