I took a video underneath the car of the rear drive shaft, next to the rear wheels, so that you can all see where the vibrating problem could be originating from. I have the car up on jack stands and I take it up to 80km/hr where it starts to get really bad. Notice the noise it makes as it slows down near the end as well.
https://www.youtube.com/watch?v=IhIE...ature=youtu.be
Any thoughts? After the clutch kit was recently installed could the problem be because my mechanic didn't aligned the drive shaft properly? Propeller shaft run out tolerances?
By visual inspection the drive shaft appears to have all of the nuts and bolts tightened down effectively. I guess I'll need to take it to the Nissan dealer to have the drive shaft serviced...