The driveshaft ujoint was replaced - wouldn't that be evident at lower speeds during 1&2 gear accel? Went to pick up some window switches(they were wrong-it was an 87300sd not a 82300d like the ad said) and got up to about 95 mph and could feel it in the wheel a touch and some weirdness in the front end generally so I'm going to get it up on a lift tomorow and double check everything