They were talking about the 240sx, not the Silvia. In the US (240sx, not Silvia) they are not referred to as S14a and S14b, that's just how it goes, but as I said it's a common misconception. You don't need to believe me, I don't care.

Different terms are used in different parts of the world and it really depends on how "JDM" you want to be...
Meh, I'm not going to post on the topic of 240's anymore, this is not a debate for cars, it's a thread for the wonderful show Initial D. Want to debate some more? Take it up with me in a PM.