I've been giving a lot of thought to this car and with the girlfriend off visiting with daughters I have a rare opportunity to chime in on a weekend. This is a VERY NICE Z indeed. It appears to me to be completely original, all 4 tie downs, except for the missing air filter housing decals. Two very positive, in my view, aspects. One, no add-on A/C. Two, It looks like it wasn't undercoated. Yes, your honor, I undercoated lots and lots of Datsuns of every stripe during my dealer days. Why not, we got paid 3 tenths of an hour labor for every one we coated and, in a perverted way, it was a bit of fun..
We're going to see more such Zs in the future due to a syndrome I call Aging Out and this car is a perfect example. Over the almost 40 years I've been in business I've been lucky to include in my customer base a large number of original owner cars. The owners of these cars are now almost to a man, no women in my group but I'm confident they exist, well into their 70s and beyond. In the last few weeks I've been contacted by a couple of these chaps or their relations about the best way to sell their Zs. I've also heard from a reliable source of other such situations. No, I'm not going to tell anyone about the details as I keep such conversations private but I think you get my point.
I don't remember why I did this but when I had one of these originals on my greasy hands I took lots of pictures and wrote lots of notes. I've been lucky to have restored a few unmolested cars and of course did the picture and note thing for those projects. I can assure you there is nothing neat and tidy about this info! I'm bringing this up to address a comment I read suggesting someone put all of the original info into some sort of book, print a lot of copies, put them up for sale and wait for the the big bux to roll in! As Rod Stewart sang, "shows how wrong you can be". I can't even convince customers of the importance of owning a factory service manual!
Yes, BAT is full of characters with nothing but time on their hands and the need to establish some sort of reputation as the definitive source of Z car info. There's even one character who has an extensive criminal record of fraud, OUCH!