Yeah I was getting a vibration starting at 80 and getting worse the faster I went. Started getting real scary about 100. After that things inside the car really began to become a blur. This was a driveshaft that I had bought out of a wrecking yard back in the 80s when the other one actually got so bad it broke a U joint and flew out of the car. So I've been living with this for a long time. It was fine most of the time. I don't normally get it over 80 mph anyway but the trap speed was 101 before the winter work so probably abit more now. I'm hoping this will take care of it. We'll see tomorrow. A quick blast on a lonely road should tell me what I want to know.