Jim,
I made my own drag link. It did take some work, but it is possible. Here is a link to my description on my web page:
http://home.twcny.rr.com/schickling/1940Chevy/rebuild3.html Drilling out the stud to remove the ball for the old style drag link was the worst of the jobs. Now it has modern tie rod ends from NAPA.
Bill Schickling