Tetsu is the owner of Ultimate Z in Tochigi and our general host when we travel over there. Yasu is the President of the Ultimate Z Car Club based out of Tetsu's shop. Yama-san is the exterior designer of the Z32 and probably the designer of anything you've liked out of Nissan back in the 90s and 00s we've come to find out. Nagata-san is new to me and his story is in my post. Tamura-san is now a Chief Product Specialist in charge of the GTR for Nissan. When I met him before he was working for Yukawa-san on 350Z development.
I think that's everyone I mentioned.
Later
When was the last time you *really* did something with your Z to call yourself a Z enthusiast?