Just added a Swing Case toolbox under my Roll n Lock tonneau cover for storage of jack (subs & amps took all under seat) and towing accessories. It is really convenient and takes up little bed space. I am liking it so much that I am going to add one to the passenger side also!

 

Those are pretty slick, but they wont work with a bed extender will they? Are they quick release? If not how hard are they to remove?

 

They are quick release. Only takes seconds to remove the case OR it can be padlocked so that they cannot be removed and stolen. Probably wouldn't work with bed extender. Only took about 15-20 minutes to install. Bought off of Amazon.