Nissan Repair: Cars body vibration and shaking, shock absorber, body vibration

Question
I have a Nissan Patrol 1999 mod. and the car vibrates at @100 to 120 KM/Hr .
The following repairs had been done and problem still persist:
1. steering rod shock absorber has been replaced with steering rod pushes.
2. ALL blancing arms bushes have been replaced
3. wheel balancing done
4. Brake discs have been turnered with new pads

Answer
Check the universal joints and if it has a constant velocity joint check that too.  Also, there is a possibility that the tailshaft of the transmission could be worn.  Wiggle the driveshaft at the transmission and see if there is excessive play.  There should be little to none.