Yeah, thats a C110 skyline (so is the purple/silver one) - The car you speak of , INASNT, would have been a datsun 240k, which is the same body. However, the Aussie delivered 240k was basically the bottom spec GT skyline, with an even lower spec L24 from the current-at-the-time Laurel sedan. The jap one got fruit like twin SU's and higher comp in the L24, and the option of the GT-R model with a S20 2.0 litre DOHC six.
You could build a nice replica gt-r off a 240k though...
In short, INASNT, 240k's are getting more valuable, but in comparison, cost wise to a jap GT skyline, "piece of shit" is still where its at in the price stakes.
cheers,
floody