I have a clunking from my drivetrain everytime I put it into gear or everytime I let off or push the go pedal. I was just wondering does that sound like maybe its the U-Joints? The diffs are not messed up atleast I dont think they are because it is not driving like there are teeth missing from them. There is also a vibration around 70 MPH. Its not my tires that are out of ballance causing it to shake either I have thought of that.