For all you YJ fans, here's an article that was published on AllPar highlighting the history of it that I think you will enjoy 
1987-1995 Jeep Wrangler (YJ): Changes come to the CJ
Code-named YJ, the first major re-engineering of the old CJ line was named Wrangler in the United States, YJ in Canada. It was first shown in February 1986 at the Chicago AutoShow, and landed in showrooms on May 13, 1986.
Functionally, the biggest difference was the new suspension, altered to avoid flip-overs, which had become increasingly common as CJs became popular for recreation. The YJ, like CJ, was a live-axle design with a Hotchkiss (parallel leaf spring) suspension. In short, the car used longitudinal, semi-elliptical leaf springs in the front and rear, with a front stabilizer bar and front and rear track bars.
To increase stability, the springs were widened and moved further apart, and a “track bar,” or Panhard rod, was added (along with numerous other changes). The setup worked well in preventing rollovers, though Jeep engineer Evan Boberg wrote, “the ride quality was very poor ... [and] stiffer springs were required to meet durability requirements, making the ride even worse.”
See whole article here:
http://www.allpar.com/SUVs/jeep/1987-wrangler.html