*Can bad diff bushings cause rear-end vibrations?* My 03 is getting some rear end vibrations once over 40 MPH and also an occasional clunk in the floor during braking with clutch in. The clunking happened a few times. From what I have read the clunk is a cause from bad diff bushings correct? But can the vibrations be from the bushings? Also I have I hear a metal on metal kind of sound when drifting forward while in neutral (kinda like bad brake pads on rotors but brakes aren't engaged.wheels seem to spin freely. Any help is appreciated.