Quick update...
I am now an official member of the 350Z club!!!
After giving it the once/twice/3 times over i decided that it was definitely the car for me! Good service history (all Nissan apart from last indy inspection), new exhaust (to the cat anyway), recent discs and pads, refurbed alloys and critically new struts in the boot so the tailgate doesn't eat my head lol!
There are a couple of downsides but things I can easily fix- head unit won't play cd's (thanks forum) and the interior is showing its 10 year age (wear on gear knob (can easily change), handbrake handle (not so easy I've read?) and drivers seat (scuff master to the rescue!!)). Pretty trivial things and defo didn't put me off. The dealer even gave me a new Pioneer head unit, fascia adaptor and all the wiring harness' to connect it to the Bose system- though I'll probably punt it on ebay and opt for a double din job in the near future!
Totally chuffed, car drives and sounds awesome- got to test it out on my 3h journey home :-)
Thanks for all your kind posts!
Happy motoring (ps I'll get more pics up tomorrow after I've washed it!)