Stock GM studs were used to mount the new steering arms. The studs are not symmetric, with one side threaded farther than the other. We installed the studs with the longer threads into the knuckle and the "dimple" on the stud facing up. The studs use 7/8-inch nuts, which were doubled up to fully seat the studs. After the studs were installed, the spindle was reinstalled on the knuckle with the six 9/16-inch nuts.