Custom 575 gallon tank with meter and power retracting hose. Zf5 transmission tied to 7.3 liter IDI. 78,000 miles, its a 5 digit odometer but its pretty apparent its never rolled the 100k mark. Has room to mount: Def tank, compressor, and/or welder on top. Pto driven fuel pump does approximately 20gpm at idle. I would consider splitting the bed to be mounted separately or possibly 4WD swapping to 4.10 gears for the right money. Currently geared to 4.55 2WD.