Its odd that it lists 14 tyres.
All brochures and documentation i have shows 15 tyres.
There were 20 somthing nismo version produced. They had what i think was nismo parts left over from the Primeras and all had the oldschool design 32V series gearbox.
Any N1 that was optioned with just a nismo gearset or diff or such id say would have had the original cluster swapped out and put into the original box sold with the N1. So i guess it could go either way.
The Nismo cluster is what made the N1 quick in racing, but was overkill for the street.
Also those data graphs of troque vs rpm vs speed cut off at 180km/h. The factory ECU's werent limited. I think they only show 180 because of the "gentlemans agreement", but on the track here ive definately driven one over 180km.
Also irrelevant of their tires size listed - they have the same outside rolling diametere. Nissan didnt change the speedo gear drive or the sensor for the N1 either. Those tyres sized listed have no weighting on final drive rpm or gear speed vs road speed.