windshield wiper motor

Before removing the E9 wiper motor. Tape the windshield wipers & arms to the windshield, this will ensure the linkage is in the correct place when reinstalling the E24 wiper motor. Remove the wiper motor by removing the linkage nut first, may need to pry the arm off of the splined shaft...

I looked through the posts but did not see anything for sale. Does anyone have a working used one I can buy? I took mine apart and it's all rusty inside.