I think most new Datsun owners are young these days, say from 15-35... but yeah good point, with them becoming rarer they will also be more expensive and thus less affordable for the young kids. Not that I think that's a bad thing to be honest, after seeing what some kids do to them...
"bolt-on flares (what we Z people call ZG flares)"
Can't help you with pics of 1200's with box flares, but this quote got my attention. As a Z guy I am sure you are aware, but at risk of being Mr. Obvious I'd like to point out that the reason the overfenders for the S30 Z-car are commonly refered to as "ZG" flares is because they were OEM on the S30 Nissan Fairlady 240ZG in Japan. This model was released to homologate these parts for Group 4 racing (ie the long nose, overfenders and rear spoiler). You will probably notice that the racing cars had much more "wild" fibreglass additions though - this was still within the FIA rules as these more extreme parts were available as sport options. The "G" in 240ZG by the way stands for "Grande Nose" according to Nissan.
Hm ok well my message didn't appear for some reason...
Anyway, I hope you are enjoying those brochures! No, unfortunately I wasn't lucky enough to be alive in the 70s! I have just collected them over a while... No more Sunny brochures though sorry. I've still got a fair few other ones though, including lots of Nostalgic Hero that all has to go. Ever seen that magazine? I think it's fantastic, best magazine I know of despite being in another language!