If your willing to ride this direction, I know someone that could probably help you out. I think his usual asking price is $75, but I'm not sure. He trikes out wings all the time, so he's got plenty of spare parts laying around.
I'll check with him tomorrow if possible. I'm limited at the moment on how and where I can access the net, as my laptop plug pin has screwed up, but I can get on here with my iPod if I can get a wifi connection.