I fitted my Royal Sterring Wheel to my ND. I think it is absolutly brilliant. The job is was straight forward for me and i am sure it will be the same for a NC too. Check Youtube videos for a guide on how to remove the air back. As above battery was dissconnected for a good 30mins before starting the job.
Hardest part of the job for me was locating the clips holding the airbag in place, every thing else was straight forward after that.
You will not be disappointed.
I expanded on my install a little more here: