http://www.350z-uk.com/forum/viewforum.php?f=17
Most of it is in here bud. There is a guide with the differences between imports and UK cars.
As for UK cars themselves ther have been several upgrades over the years.
Apart from that there are two specs. The standard and the GT. GT having Rays alloys, bluetoothe, bose stereo, leather heated seats, cruise control. All UK cars are manual.
Anything else just post it up. I am off now but Sarnie will take over the night watch