You may also try calling either
http://www.allmustang.com/ East Phoenix or Turbo RX (480) 893-7722 in Chandler.
All Mustang has a great parts lot and they just opened a large shop about 1 year ago. I've purchased parts from them, but have not tried their shop.
Turbo Rx sells new parts and does work. I've also purchased parts from them and had subframe connectors installed there.
Try calling them both. Good luck.