Showme, they asked me for a photo but I didn't know it was on their website, nice!
You know, I never figured out why they said you had to lift the bed to install the hitch. I didn't. You do have to remove the two bolts at the rear of the box that mount the box to the frame. After you install the hitch you run those bolts back down through the box and frame through holes in the hitch.
I have the one that comes out just under the bed. I made a spring mounted license plate bracket that covers the hitch when not in use. Also, when not using it, I slide my ball mount into the hitch from the front, so it points toward the front of the truck, under the box, that way it's always there when I need it and not banging around in the box or under the seat or lost somewhere. Did that make sense? I'm rambling.
