About 2 years ago I made a career change from corporate Six Sigma Black Belt/Project Manager to carpenter!  Leaving the corporate gig was not my choice but I got the opportunity to work for a great carpenter.  Woodworking had been a hobby for many years and I always dreamed of making a living at it.  I used to explain what I did for a living and folks would generally shake their heads and mumble.  Now I say simply "I'm a carpenter", no more head shaking!

Anyway, when I started making sawdust for a living I bought a used Silverado WT with a mid-size ARE commercial cap.  The great thing about the cap was that one side was open giving me access to the entire bed in the short term and allowing me to create custom storage in the future.
   

After working with only the left toolbox for a year or so I began to have a good idea what I needed.

Below is the current final result.  I say "current final" because.....

Looking from the rear of the truck you can see I sized the depth of the right box so that I could fit my Paul Workbench on rails between the original left box and the new right box. There is space above the workbench for a piece of foam and my rails.  At the front of the bed I built a box to hold my saw horses and table saw out feed supports; these are accessed from the left outside.  My table saw slides underneath the sawhorse box and leaves room next to it for other less frequently used tools.  At the tailgate I can fit my SysRoll and CT with systainers, ready to unload and go to work.

 

The left box came with the cap and is not deep enough for anything but a single layer of sys1's.  The left box contains most of my smaller, frequently used hand tools and supplies, as well as the critical lunch box!  The half of this box towards the cab is well organized with tool holders, but the rear half of it needs some work. 


The right box is sized to hold systainers!  The shelves are adjustable, I routed out mortices on them for the systainer feet to sit in.  I have not had any trouble with them moving around or coming loose in my travels.  I have changed to latches on the systainers that hold non-Festool tools to make them a little easier to identify.  Makes it easy to send someone to my truck to get the DeWalt Laser, "it's the one with the yellow latch", etc.  I blacked the windows out to prevent the folks from seeing what is in the truck.
 

@gunnyr  - a Veteran's Day salute to you on your demonstration how to make space and access efficient use of a pick-up truck box/cap combination. Putting your Ron Paulk bench up in the air - space generally wasted in just about every pick-up - is a terrific approach. Capturing the space above the wheel housings - again most often underutilized - you hit the nail on the head both times - no pun intended.
Until you find a way to replace your pick-up with a van this will go a long way to make your work more productive.

Last but not least, a special salute for posting information of interest and use to many  here on the FOG!

thansk
Hans

Many thanks @TSO Products, serving was my great honor and privilege.

My next step is to create rail and level storage beneath one or both of the tool boxes.  That space seems to be particularly wasted and well protected. 

You're right that my next vehicle ought to be a van.  Maybe in a year or two....