If it's been stood for as long as you say then potentially it could need;
New tyre's all round.
Fluids: brake fluid, clutch fluid (both hygroscopic fluids), coolant fluid.
Battery.
Oil & filter.
Also if you follow the service schedule for the 350Z it could potentially also need other items like new spark plugs etc depending on whether they have been replaced correctly at the mileage/age specific intervals.
Service schedule for a 350Z here: http://www.350z-uk.com/topic/31110-service-schedule-for-a-350z/
Could be a good buy still though if you can get it cheaply enough. Also worth checking that mice or similar haven't made it their home & chewed through wiring etc if it has been outside for years.