Okay so I talked to the guy who installed my lift today and he said that the vibration that I get from around 10 mph to 45 mph could be caused by the driveshaft needing to be lengthened. Anyone with 6" lift know anything about this or is the guy just trying to get me to give one of his buddies that builds driveshafts somework. I personnely feel that he just didnt get the angles right but I am new to this and only know what I have learned on the TV shows everyone loves to put down. Not to many people have lifted trucks around me except for those pretty street trucks that never even see a dirt road and they dont count. Help, Im new, Im new, I dont know what to do!!!!!!!!