They are not interchangeable.... The guy selling it sent me a pic of the W140 actuator and the connector is different. It is round and cylindrical sort of. Too bad...it's on e-bay, new for $375.

If anyone is interested in it check out the following link.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6763&item=2444667336