Let me know how it goes bud, I'll probably do the same to mine.
Also as its a known common issue..is this going to cause long term damage etc?
The 350Z gearbox is not the strongest in the world so problems can occur but running the correct oil will help a lot especially if you drive the car hard or on track.
In our rally cars we tend to change all the fluids including gearbox and diff oils every event due to the massive temperatures that are reached, the thing is a lot of track day cars will reach similar temps so the normal service intervals then become obsolete.
Its not just track driving either, the way some of our local back road hero's drive they put their cars through an equivalent WRC stage!