My recommendation. Spend the dollars for a driveshaft and adj rear upper arms. I ran 4" lift with stock driveshaft for several years. No vibes per se. Then installed proper shaft and arms. Was surprised at how much smoother the jeep was.
05 TJ Rubi (auto) / RE 3.5 SF / JKS BL&MML / Old Man EMU Shocks / Currie Anti-Rock, Steering, Track Bars / Alloy Axles / Talon CV Driveshafts / Nitto 33x13.5 Mud Grapplers / 15x10 Eagles / Jeeperman Skidz / SkidRow Engine-Trans Skid / MileMarker Winch / RockHard Front & ProComp Rear Bumpers / Ravelco Security / CO2 Tank / CB+HAM
92' YJ - lifted, locked - sold...