Contact Bill Jenkins or go to
www.teamfordparts.com. Plug in your year and model, go to Windshield, Wiper and washier components, Motor and see the illustrations for what you need.
Bill Jenkins contact info in Duratec Maintenance FAQ
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=958650&page=0&view=collapsed&sb=5&o=31&fpart=1