Alright Ian, basically I'm going to have to give you that one aren't I
Very confusing as all other evidence points towards the Nismo engine being around way before the HR was. When I looked at this originally in 2010 I'm fairly sure the Nismo website was different, as the RS and the RS-C now seem to have their own seperate sites. Possibly I got caught up on the development and never stopped to look at what Nissan called the damn thing. I stand by everything I said about the development and background because it's true, but i'll man up and say it:
I'ts officially an HR.
DB
Kneel before ZOD!