the transmission yoke and the bushing in the tailhousing were replaced because i was told that that would be were my vibration is coming from, so i tried it. it is still there. My drive shaft seems to be about 3/4's of an inch too short, how this happened, i have no idea. Is it possible that this is my problem?? I am losing my mind on this. has anyone had a similer problem? Oh, yeah, the vibration is only there at around 70-80 mph (cruising speed) It will also kick the car out of gear. I am wanting to get this taking car of, I think there is a trip to the dragstrip in the near future!!!