On the non-technical side, this is an interesting subject.
I bought my Z, a 1972, in 1979. It was my first car and I was 17 years old when I bought it. I just turned 47 last week. My Z is now over 37 years old and I grew up around and own antique cars like Model T Fords. .
It is interesting to think about the kind of cars that were 37 years old when my Z was built: 1935. The "antique cars" of those days were things like Model T, A and B Fords. In fact, the Model T had only been out of production for 8 years in 1935. Seems funny to think of our sleek, sexy Z cars in that antique crowd, but that does seem to be the case according the general auto parts world.
That being said, I can by a brand new, reproduction gas tank for any of the Model Ts I own, but I cannot buy a brand new reproduction gas tank for my Z!
Oh, the injustice!
BTW, I really do need a good '72 240 gas tank if you now where I could get one.
Here's to the Z Car Antique Nationals