Doh - wish I knew about the
http://shbox.com/page/windowmotor18.html before I replaced the motors by removing the regulator. He replaced the motor only and not taking out the regulator. He explains about grinding with a dremel to get access to the motor rivets which is not apparent just looking at the door panel. This simplifies the replacement since you dont have to pin the spring in the regulator and worry about removing the window track. Very nice writeup and he deserves a few bucks if you follow his procedure.