On vehicles equipped with a two piece drive shaft & carrier bearing as on the Mega Cab, there is the potential for take off vibration, depending on the severity, this can be corrected with shimming down the carrier bearing.2-3 hours2003-2009:4WD:Dodge:Ram 2500;2003-2009:4WD:Dodge:Ram 3500;2010-2016:4WD:Ram:2500;2010-2016:4WD:Ram:3500