Since my rear window they've changed the design of the rear pane a touch - it took them over an hour to fit it, because it was about 2mm too big - really good tight fit though!
They're a father and two sons. They're very flexible on front window designs, too - want an open panel where the slider is?OK. Want circles there to maintain the car's security? Not a problem. Losing the rear window mechanisms lost kilos out of the back of my car.