I've started thinking about that because my tool collection is getting bigger. I'd like to have a toolbox in the back of my truck like a craftsman chest but not so tall, more the size of the regular tub boxes, but drawers instead. Anybody make them? Because honestly, I hate tool bags... I want organization.
UWS Had a couple nice options, I recall a 5th wheel box which was shaped like 5th wheel tailgate, the two side pieces had drawers and I think the middle section was bulk space. There were wheel well boxes too, that sat behind the wheel wells, it had doors you opened and trays that slid out.