I just went through this with my '05. It has a fabtech 6" lift. I took it to four wheel parts unlimited. Willy P works there now and the tech was very knowledgable. The track bar had to be replaced (I tried replacing just the bushing__no good). The caster has to be set between 3-5 degrees positive. The pitman arm nut has to be torqued to 350 lb/ft(common problem) and the track bar bolt has to be torqued to 400 lb/ft. I have new shocks on my dual stabilizer as well as my stock stabilizer. After all this work everything is great.