I made an attempt to explain this in this thread, but I’m afraid my description wasn’t very clear. So this time I’m including a couple of pics to help.
Nah, you were clear last time!

I've since arranged a way to make it work in my cab. On mine, I attached a 1X2 onto the cab below the monitor area, but behind when the CP fits. I notched it on the table saw about 1/2", and the lexan will snug down into that.
At the top, above the monitor in the top right and top left, it will attatch via a screw and post. I just picked up some little 1" round dowel rod "spacers" (about 1" deep also) at Lowes. They were cheap and I didn't have to cut them, hehe. I also picked up a threaded lug to hammer into the 2X4 in the cab, then glue the dowel spacers (with the same 1/4" hole drilled into it) over that lug-hole. Then, I'll fasten it with a 1/4X1" machine screw and screw cover.
I'll try and post some pictures later to make this clearer! (hard to do without images, unfortunately...)