Yeah, noisy 1st motion shaft bearing in the gearbox, characteristic fault, however, depends on how noisy it really is and if the gearbox warrants replacement.
When you depress the clutch, the 1st motion shaft stops turning.
I have these in stock mate.
Just drop me a PM if I can help further.
https://www.350z-uk.com/topic/120821-4-x-350z-and-1-x-g35-skyline-breaking-for-spares/?tab=comments#comment-1778938
Yes mate, still for sale at the moment but been loads of interest.
Collection from the Perth area or shipping is not a problem.
The HKS 2530 twin turbos sold last week and to be perfectly honest I thought that the C2 would sell first.