8b. The upper control arm rod ends will be used to adjust the camber and, to a small degree, the caster setting of the rear suspension. We built the rear tie rods from 1-inch od by 0.250-inch wall chrome-moly tubing. The tubing was tapped with standard threads on one end and reverse threads on the other to make setting the toe-in and toe-out of the rear suspension a snap. Just rotate the bar in either direction, set the jamb nuts, and it's done.