Just a minor nitpick- - - - -the part in your picture with the ball is the Pitman arm. The drag link is the rod that attaches to it. Once you get the new ball installed, be sure to get a rebuild kit for the drag link with new semi-circular pieces that clamp over the ball, and the spring that holds them tight against it. Although the plug in the end looks like a big straight-slot screw, there's a special tool called a "drag link socket" (Thanks, Captain Obvious!) that's the right tool to use.
Have fun!
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!