Check these guys out, this is my next upgrade.
The OVANO SWITCH XL is the most versatile upgrade you can get for your T5 or T6 SWB. Including a full size double bed, a 180Kg capacity drawer, and all with no hole drilling required.
www.ovano.co.uk
I'm a gas service engineer with a Kombi as my daily vehicle.
An experience I've had..........someone ran into the back of me putting my van off the road, all my spares and tools are in racks and when I don't have my van there's no point going to jobs even with a hire van.
Now I use the stackable boxes that shops use for deliveries (with the lockable lids) for my spares and tools, anything happens to my van and I can now transfer all my kit to any other vehicle.