Mike,
I love the set up. Keeps the unit out of the weather and eliminates a trailer are the two biggest reasons why I decided on installing it
in a Sprinter.
I can't say the idea was mine though. Another pw'er in the next county showed me his set up and I thought it was a great idea.
His version was to use a 325 gallon barrel tank as the supply, two separate cold water units and a 3 stack hose reel set.
I first had the same tank but put in a 2-gun hot water skid instead. Not much room left...about 80 cubic feet.
Changed out the tank for a square 150 gallon version and placed a sheet of plywood on top with a hole cut for the access port.
Now I have 125 cubic feet of space for all the rest of the supplies and a place to put a tool box, water cooler and room for accessing the back
of the skid unit for any repairs.
My service guy (Tom Vogel) hated it when I brought the unit in though because we had everything directly bolted through the floor and getting it
out for service was tedious and time consuming.
I came up with another idea which is based upon a set of 4x4's bolted through the floor and another bolted onto the skid frame and they sit
side by side and have 4-1" grade 5 steel linch pins to keep them in place. Now, I just have to pull the 4 pins and out she comes on a forklift.
I can take pics for anyone who is interested in the set up.
Rod