Just picked up a 2004 Mustang 3.9 V6/automatic. I like it. Quite a bit more comfortable than the other car is. Anyway-I have noticed a vibration, more at lower speed, say between 5 and 20 mph. Feels kind of like U-joints to me. I notice it more under acceleration. I haven't tried it wide open yet, just 1/4 throttle and less. It's got 270,000 miles on it. Feels more frequent than a tire or rim. Feels like a U-joint to me but A V6/auto tearing up a U-joint? Kind of hard to believe...PLUS most of the time a U-joint vibrates mostly at highway speeds, not accelerating or decelerating, just holding a steady cruise. This thing is low speed, accel only. Next question-the Odometer is junk, sometimes works sometimes doesn't. What's the options on these? Replace dealer only? Junkyard? I ASSume the PATS module is built into the cluster, if I decided to go JY route? And I assume that it needs dealer assistance to install?