vibration 55-70 mph
car feel s like it is running over a wash board / rumble strip without the noisem nothing before 55 mph and 80 mph. put car in neutral at those speeds no change
i dont know how you drive but when i go drifting, snow gets all under my car, stuck in the wheel-wells, and on the suspension. if i leave the snow over night it freezes and turns rock hard and make my car shake. you either have to go though a car wash or kick/hit all the snow from under your car and it should be fine.
thanks for the input mark, the driveshaft was pulled today and the vibration stopped, replacing shaft ( ford is )