Join Date: Nov 1999
Location: Arroyo Grande/SLO, ca usa
The manual and power regulators are different. The manual ones, have the lever gear located higher and so the big toothed arm has its teeth higher.
Conversely since the power window motors basically hang downwards. The drive gear engages the big toothed arm at lower location.
I'm not sure about the other mounting holes, but I have both types stashed in a box somewhere (not for sale), so if you need pictures let me know.
By the way, it's not like you can buy a rear power window regulator anywhere. I have only seen one set on ebay in two years. The good new is the rear regulator rarely wear out. Sure the little nylon roller at the end of the arm breaks frequently. But you can get a car windshield place to rivet in a new one for $.