We have used this truck for 3 years now.  It has a 3200 gallon tank on a live tandem.

The bed is 22' long.  We have a 60 gal inductor on the back.

The ladder on back makes it much easier to get on the truck.  The ladder is hinged and  folds up.  We can pull a 1000 gallon trailer if we need more water or a seed tender if planting.  We can haul 2 pallets or 2 totes on the right rear beside the mixing cone.  The clear horizontal tank is a 15 gallon clean water tank.

All of the sides are hinged.

We haul garbage and empties on the front.

We have a couple of boxes under the bed for supplies.