I'm looking for lift kit for my 2009 Chevy Tahoe SSV. I have RPO code ZW7 (premium smooth ride) as my chassis package. If I am correct, it has conventional struts in the front & uses self leveling (nivomat) shocks in the rear. Every lift kit that I seem to find says that it "will not work with auto ride or self leveling vehicles ". I've seen plenty of these LS base model SSVs lifted. So there must be a way. Can someone please tell me what I have to do to get 6 inch + lift for my truck???