They did not come with a carbon option, i believe there was a fake wood effect, but its rare, price wise you will pay anything from 8K upward depending on age and spec,10K should get you a pretty good one, but the 6 speed manuals with brembos are pretty rare, with the price of fresh imports soring i can see the prices rising.
If you want more info pop over here http://www.skylineowners.com/forum/foru ... .php?f=220 we are a pretty friendly bunch
6 speed manuals with Brembos are not rare. Surely nearly all UK cars had Brembos?