Ya i deleted the post above because I thought you were talking about the van door motors because I just read door motors. I found 'sliding door motors' from a Chrysler. I Ebayed it.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7950688021&catego ry=33696&sspagename=WDVW
It's quite pricey though, and also comes with the flex shaft that came in this year's KOP. It's new though...But good luck looking for one.