AllAmericanInfidel
Caught the Bug
This was the JKS JSPEC 2.0. It is a 2" lift, but yielded me exactly 3" of actual lift on this lightweight 4 door. It was linear springs rather than the dual rate they use now. I am not sure if they still offer the linear springs anymore. I had it paired with Fox 2.0 shocks initially, and then Rancho 5000s.
As far as performance, I was very happy with it. The best way I could describe it is slightly firmer than the stock ride. It flexed great and soaked up big bumps well. The springs paired with the Fox shocks was a stiffer ride than when paired with the Ranchos. If there is anything specific you want to know, please feel free to ask.