High bitting point, noisy thrust release bearing, they all sound a tad ropey when the pedal is released, engine running and in neutral though.Thats a trait of a 350z
As said, clicky axle, simple fix. Just a few hours of your time and some grease.
Plugs circa 50k.
Make sure on service history, and if possible call the garages that have serviced it to confirm that they actually did service the car, they will tell you if there was any major issues with the car.