I ordered a set of Lakewood 20475 clamp on traction bars. Traction bars prevent axle wrap, when the spring tries to twist from the torque of the differential. When the spring starts to twist, the traction bars hit the spring eye and keep the springs from twisting.
When adjusted correctly, the snubber should be 1/2″ below the spring eye. You can put shims under the rear traction bar mount to raise the snubber or cut the snubber to lower it. Be sure to adjust them with the weight of the car on the suspension.