Optimistic Paranoid wrote:
I'm thinking your best bet is to swap your pickup bed out for a flatbed, which would open up all sorts of possibilities for side box storage, both under and over the bed. Take a look at the photos in this thread:
https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwj4x-XPl5XcAhUFMd8KHUR5CzgQjRx6BAgBEAU&url=http%3A%2F%2Fwww.rv.net%2Fforum%2Findex.cfm%2Ffuseaction%2Fthread%2Ftid%2F17978710%2Fsrt%2Fpd%2Fpging%2F1%2Fpage%2F14.cfm&psig=AOvVaw2dWpC4Ws64vQ8wbgfCG33t&ust=1531334467685054
They are all Flatbeds here. So no problem using a under tray storage box