I do have the stock suspension, no alterations.The "problem" was barely noticeable at first,slight vibration.It gradually progressed over 3-4 K to a definate vibration/rumble from what seemed to me the front drivetrain.I only felt it from 0 to 10 mph.It seemed worse when turning the wheel either way.At the end I could also feel it slightly as the tranny shifted into higher gears.my ride has only 43K. I was able to check out the old shaft and could definately feel resistance in both u-joints when moved in a certain direction.Hope this helps.