i installed a 1 1/4" sway bar from an '82 1-ton. i used the 67-72 frame mounting straps and new urethane bushings from classic industries.i installed 4 new springs prior to the sway bar with little difference in sway control. the sway bar made all the difference in the world.its almost like driving a sports car LOL.i seen a truck with one in the rear that came off a late 80's camero? something to think about!