Our most popular upper link assembly is made of heat treated 1/8" thick aluminum to be one of the lightest third links available. The formed edged help to make it as strong as brackets weighing almost twice as much. The holes are at 8-3/4", 10" and 11-1/4" from the center of the axle and will accommodate rubber bushings, rod end bearings or a spring link. (Not for use with 3201).