As you've said, the Nismo never went on sale in this country although it was Nissans original intention to sell them here, maybe it was the high price tag, 50k plus. Nissan brought one car into the country and this was road tested by a number of magazines. What happened to it after that...I've no idea I'm not sure if any were imported into the country directly from the JDM market, I've never seen or heard of one in The U.K. Of course, they were very limited even in Japan, only a couple of hundred were made.
http://www.evo.co.uk/carreviews/evocarr ... _350z.html
Pete