It all started when I decided to hate the way the battery intruded into the living space. I did a quick measurement between the tanks and the front of my trailer and decided a Torklift box would fit.
Once the box arrived I realized that I didn't have the space. The lid overhangs by a decent amount.
Also with my tow gear the box itself couldn't sit cleanly on the frame.
so I decided to get some help and move the propane tanks forward and build a bit of a platform for the box to sit on.
You can see the result here.
Clearly not done yet but thought you might be interested.