Several people have fabricated a home-brew adjustable drag link using a tie rod adjusting turnbuckle and a couple of tie rod ends that fit the Pitman arm and the steering knuckle, one with right hand and the other with left hand threads. That setup comes in very handy for setting the steering gear center point, also. You'll need to find an old geezer at a local parts store who still knows how to research parts from a paper steering parts catalog to make this type of project work. It's getting hard to find anybody other than a computer keyboard jockey in a parts store these days.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!