I have a 89 Yj with a 4 inch BDS suspension lift and a 1 inch body Lift.  I am also running teraflex revolver shackles in the front and rear.  My yj sits on 33 inch tsl's and axles and drive train is stock.  I was wondering with this suspension setup What size shocks do I need to order to give me the most articulation(flex) possible.  I don't have access to an articulation ramp?  Any Help would be appreciated.  Shocks in mind were rancho 500o's