Gradualy building my knowledge of the R32, mainly through the net, one question comes to mind, some R32's have square slots above the front air dam and some don't, was this a year change, or a body kit mod?
It is called "Nismo Air Duct" or "Pig Nose" in Japan.
I don't know the name in the UK.
The parts is originally for the limited edition "GTR Nismo" and many GTR32 owner fit the Slot as additional.
So it is usually not the factory equipment for GTR32.
For GTR33, the Phase II model (the latest model) has the Slot as the factory equipment.
For GTR32 and GTR33, you can buy the parts as Nissan Genuine parts.
GTR34 does not have this equipment, but you can get it from Mine's.