Topic split and created a new thread..
Lynton - I definitely agree with that sentiment, people do tend to talk their (Japanese Classics) values down, but when you compare them with other marques around the same era they were light years ahead in so many respects.
As you mentioned cost of restoration is the same in many respects, so when I see a 240z with a bare metal restoration like the 1 mentioned on carsales website. I know that if someone was to pay for that kind of restoration then $65k is actually not bad when you consider what it will cost someone to build a car to that level of fit and finish.
Although that particular car is not quite how I'd want my Z, there are some subtle customisations that I would have done differently and I would have gone with a more original feel - that's just me personally, still you could make those changes relatively easily compared to the rest of the restoration work that was carried out.
Today I came across this car in a magazine, it's a concept car that Holden never made. The Holden Torana GTR-X.
http://en.wikipedia.org/wiki/Holden_Torana#Torana_GTR-X
http://www.youtube.com/watch?v=Mvf5uIDlLFM
http://www.youtube.com/watch?v=4J2upaGJXMA
The article quoted some of the original people from the GTR-X project as having seen the Datsun 240z and thought this could also be a success but the bean counters at GM said no and the project was scrapped. It makes you wonder what kind of a success it would have been if it was released?
Some of the features like pop-up lights, hatch strut (like the 240z), bonnet opening from front etc.. Are all so similar in overall feel of the 240z and Toyota 2000GT. The tilt steering wheel was actually quite remarkable for back then also, when you consider it was 1970.
In my opinion though it's only a matter of time before values of the S30Z and other great Japanese cars of the same era increase in value, I think attitudes will change, when you consider the very first 240z's to arrive in Australia are now 44 years old a lot of that stigmatism will need to change. When you consider what some of the parts for these cars are now selling for also, the values can't remain low forever.
I feel they are the last true bargain for a vintage car enthusiast to pick up.
I do have a conflict of interest though, on the 1 hand I've always enjoyed these cars because they were great value for money, but as time goes by less and less people will be able to enjoy them the way I did. Still I guess that's the same way the current Silvia's, Skylines, RX-7's will go over the next 10 - 20 years.