Hy lostmy47, center the steering box, set the front wheels to the straight ahead position, now measure the center to center distance between the pitman arm and the steering arm. This should be your drag link center to center measurement, If you're making an adjustable drag link, put this measurement close to the center of your adjustment range. Toe in will not effect this distance, and it will not effect toe in, that is set with the tie rod positioning, hope that helps.
