@dutchzcarguy, thanks for adding the detail. I knew that Euro-market 240Z's were available with 5-speeds, but the specifics you added here are great. And I'll edit my original post to make it clear that I'm in the US, and my comments are based on what I've seen/heard about Z's here.
@zKars, the wide ratio gearbox in my photos came out of a 280ZX - I believe it was a 1979 - I removed i myself (with help from my local Z buddy @Randalla). I'm honestly not certain of the origin of the close ratio box - I bought in on eBay - but it was said to be out of a 1983 280ZX.
It is my understanding that the term "close ratio" refers to the difference between 2nd and 3rd. Looking at your table, either of the two later model 5-speeds would be considered "close ratio", right?