Ok I have a had an issue with the front end of my 99 for some time now and Im lost! Im running 305/70/16 tires with 4.5 offset rims.Torsion bars cranked to level the truck out. New ball joints upper and lower new tierods new sway bar links newer shocks on all four corners and recently mounted a steering stabilizer. I still have a shake or vibration from time to time 35-45 mph. But when I run 4wheel drive no vibration feels great anybody had this issue.