I ordered an Undercover a few weeks ago. Katie was a huge help and posted some photos for me.
It is a total piece of cake to install. It literally takes only about 15 minutes to install. It uses all screw holes in the bed of the trac.
I think it looks great and fits great.
My only "complaint" is the two key locks must be engaged every time which means I need to lock and unlock both sides every time I want to get inside. It would be much easier if they were spring loaded latches that had an option to be locked if necessary like the rear gate. I called up Undercover with the feedback and they mentioned that they are in design-testing of a new manual-key latch that will not be spring loaded (so it won't be automatically engaging) but it can be manually operated or locked.