Some good advice from the guys here, its just like buying any other car just because its from Japan does not change the basics, check for rust, any damage due to crashes, check KM match the last rego on the car to make sure its not wound back (still may be wound back if they didnt go past the last rego point). I would not buy a car without having a pre purchase inspection done on it by a mechanic, when i got my V35 local Nissan dealer did this for me for around $200 i think, they went over the car from top to bottom and gave me a massive check list of everything they looked at. Also get the freeplay in the turbine checked if you can, if there is play walk away if they wont take the cost of a new turbo off the price of the car.