Welcome aboard.
Regarding the clutch/flywheel ~ There are plenty of great professional traders on here that can help you out with that. They can be all found here; http://www.350z-uk.com/forum/93-professional-traders/
Cs who posted above is a great one to try (just send him a PM with any questions) and also Clark Motorsport, Tarmac Sportz etc etc the list goes on. In fact I haven't dealt with a bad trader on here yet which is why I get all my parts from the forum.