I think that there is just one location and the ones that you and NZeder have pointed out are correct.
Now ill pick on a few of my favorite Z's and my car which have been mounted using the diagram:
These guys on Hybridz:
And of course my car in the first page of this thread, looks like mine are even further forward cause they don't have the plastic mounting piece, damn.
As I've already mentioned, there was
more than one set of mounting positions on the Japanese market cars
. If you choose to ignore that fact, it's up to you.
The mounting positions on that orange car above are visibly
odd ( I think it takes a fair difference in measurement to make it that
visible ), but what proof do you have that the dimensions I
provided were used for that? I certainly didn't create the 'flipped' diagram and measurements that people are using for the LHD cars, and I think some
people have clearly misunderstood what is being measured to
. Some of them are using C10-series Skyline and 510-series Bluebird mirrors ( with the different angled / shorter stalks ), and some of them clearly need to be supervised when using measuring instruments and sharp implements.....
With all due respect to yourself, I'm wondering how
you mounted your own mirrors without the proper plastic bases? If you didn't have the bases ( the edges of which are what the measurements I provided actually use as datum points ) then how did you measure anything?