Here's the thread...You can do a search on wiper linkages. I believe there is a recent thread on rebuilding the linkage with aftermarket bushings. The one you need doesn't seem to wear out as fast as the other ones in the wiper assembly. You might try buying used in the classifieds. That part on my old linkage was still in decent shape, but I trashed the whole thing after I got my new one in.
Wiper link arm bush replacement