Your spots from Japan are great but an advice only: complete license plate is needed for identification in Japan, that means "322123" is needed, "123" only is not enough etc. This is out of my experience. Some VIP numbers, for example "1", are very frequent in Japan and without the digits in front of it it is confusing.
Yes, 322123 is the best for identification.
As you can see my spots, I spotted five GT-R´s, all of them under "35" plate, but I had to use complete plates: 33035, 33235, 33835 and even 033035 :-)
If you´re still in Japan, good luck to you !