Got this toolbox on ebay. This is on my Fleetwood Evolution E1. I wanted a lockable place to store the tools. It worked out perfectly. I had to move the license plate bracket to the right by about an inch. It sits above the bumper (so doesn't reduce clearance). It also does not increase the length (the spare tire still extends further than the box). I had to add some supports underneath to increase the stability of it (they are just steel shelf brackets bought at depot or walmart). I added a non-slip tool box material to the bottom using double sided tape.