All models with the ORA II option package have QL. All Overland and Summits have QL. Otherwise I think they all have steel springs. You cannot get a 4x4 Summit without QL. You could option up a steel Limited to the same features as a Summit (but not QD unless you also get QL), but you won't get the Summit styling touches.
No one makes a QL lift kit but you can adjust the height sensor rods to lift a QL. The QL has a stiff ride when lifted much, however. You would not want to drive around town more than 10 mph at its max height, unless you want to jar your fillings lose. If you adjust the QL height sensor rods to give you a higher normal ride height, you will be up against the bump stops when switched to OR2 level. You will have no rebound, not that there is all that much to begin with.
If you want something thats always lifted significantly and rides OK, stick with steel springs.
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac