I would certainly like to see that, Mr. Hoover. I have always opined that the 1, 2, 3, series thing was a Carl Beck distinction. What I recall is the distinction between model years and 'builds' of the North American imports. And exclusively the North American imports because the 'builds' varied so much between model types and markets. Carl goes to great lengths on his website to document the various 'builds'; and he does a good job, but the nomenclature applies to the North American imports. Of course, Nissan literature commonly refers to the "S30 Series". I see it all over the place, but not the series 1, 2, 3 like we North Americans refer to.
We are way off topic BTW.