*SORTED* Saab classic 900 electric window mechanism + motor

Anyone breaking a classic Saab 900 by any chance? My n/s window doesn't go down any longer, I'm guessing the motor is full of rusty crud, but the mechanism doesn't look too fresh either. Looking for a mechanism and motor assembly that I can clean and grease on the bench (i.e., in the kitchen...) so it will be a straight swap when I get to fixing it. My car is a 1988 3-door 900, so 5-door mechs will work too and it wouldn't surprise me if 2 and 4-door cars used the same type as well.