Our Boss has the stock ride height, so we used the lower bolt accordingly (right arrow)—27mm on both sides. Once the arm is installed, you can apply final torque to the upper arm mount, two body bolts, and the bolt under the seat. The stock rear bolt must be reused. We drilled and tapped the arm to serve as an anti-rotation stop for easy tightening, as you can’t use a wrench or socket on it. You can access the nut with a 21mm swivel and a 12-inch extension through the rear wheelwell. Use the center nut to adjust the length of the arm and set the pinion angle. Spin the jam nuts toward the center, use removable blue Loctite on the threads, and tighten the nut toward the painted portions of the arm once the pinion angle has been set. Then it’s not so critical you get them tight since there is not much room for a large crescent.