825 rear window advice

Is anyone running a Kolpin rear window with the full lower panel on an 825? The price seems reasonable. How's the fit, quality etc?

I'd like to install one to protect my cab from the elements. I have a JD poly roof, 2 pic windshield and hard doors(1/2). I want to stick a rear window in it so the only openings to the weather are the tops of the doors.

Anyone?