Here's some insight into the different specs for the Fairlady Z in Japan.
I think what you mentioned is likely.This sounds suspiciously like some of the early "leaks" about the trims that would be available at launch, no? Not exactly, but there's some overlap. I wonder if that information was not so much wholly inaccurate but, rather, referring to the JDM vehicles (and possibly misinterpreted/mistranslated). This gives me continued hope that the trim offerings will expand globally, in the eventual sense. It's what happened with the 370, after all. Well, then it shrank back down, but my point is that it wasn't a static set of offerings from launch.