Martin, are you aware of the same bellhousing issue with the 2010's and beyond?
I have the usual rattles as well, and while stationary in gear only a very very slight rattle when the car is hot, but nothing noticeable above 2000rpms. Of course in P or N after the car is stationary and hot parked in my garage after a run, the rattle is fairly noisy, but not excessive like some youtube vids. I am however hearing a very very very faint higher pitched rattle somewhere in the back while driving @ 60+ kph on fairly smooth roads though (definitely not the brake pad rattle) - not sure if this is the seat belt housing issue others have experienced, or something else under the car. The Nissan tech mentioned it at the last service and said to keep an ear on it if it gets any louder they'll investigate further. Its not loud though, and certainly hasn't increased in volume - for all I know its probably just the fly wheel and normal sounds. My GTR has also had 0 launches (that I know of ), so not currently too worried about it.