You could always buy a rebuilt unit from:

http://phoenixhardparts.com/

I wouldn't recommend purchasing a used unit unless it was rebuilt....


Can you give us a little more detail on the problem. Was the atx slipping before it went out? What were the symptoms leading up to the current problem. what happens now if you put it in gear? In reverse?, etc.

Regards,
Bob

An ounce of prevention provides a pound of cure!