GW will sell you a used one for $45. I saw on ebay, a method, not
mentioned here, for fixing the old one.They drill a hole into the
remaining part and tap threads .Then a correct sized bolt is screwed into
the dog leg end link  ,when in the installed position.

  The problem with these cast iorn links is the cast iorn stud is brittle
and will easily snap off. People think the rubber bushings need to be
compressed ,  as a shock absorber is. They continue to crank on the nut,
after it is tight, to get this nice looking  compression.The stud snaps.
There is a sleeve that goes over the stud.When the nut screws down the
threads, and meets the sleeve,that is it. If the bushings are loose,get
new bushings.But no, the common wisdon( was once mine) is to continue to
torque the nut down. Another way these snap is to not clean the threads
before removing the nut ,when a front end rebuild is happening.They are
that fragile.I have the piece you need,. However the threaded part looks
funky,but is intact.It is painted with POR15(of course). I can send a
picture of it.It may work. If you cannot find a better one, call me. $15.