I understand that is not the
I understand that is not the way Infiniti is doing things, but based off of the history of the Z and what little we do currently know about what Nissan is calling the next generation Z (400Z) the numbers preceding the Z have always indicated engine displacement. The best thing for Nissan to do to avoid such confusion in the US market would be to go with the Fairlady Z name that has been in Japan since the Z car's conception.