i just got a 2004 Z 6 speed and my shifter vibrates like crap does any one have this problem and how do you fix it?

 

Nature of the tranny

 

Having the same problem in my 04 6mt. Mine used to run very smooth, but can feel engine and drivetrain excessive vibration. several times my clutch pedal felt like it was going to break in half. Taking mine back to Nissan tomorrow. They blamed it on the tire feathering issue. They did replace my front tires and fix the allignment.