There is a guy on Mye28 selling e28 window motors for $25 each: https://www.mye28.com/viewtopic.php?f=4&t=161939
I've not converted my rears to these, so I don't know if these are the motors e9 people want, but thought I would post this in case this guy is selling the motors e9 people want. NMNA.
I've not converted my rears to these, so I don't know if these are the motors e9 people want, but thought I would post this in case this guy is selling the motors e9 people want. NMNA.