best place to get parts is directly from a Nissan dealer. I don't know how it is down under, but in the US, Nissan oem parts are reasonably priced and parts supply for models dating back to the Datsuns of the late seventies is still good, very few parts being obsolete. I work for a Nissan dealer thats been in buisness since the seventies and service all types of Nissans on a regular basis. Since I do work for a dealership obviously I use nearly 100% oem Nissan parts, But I have found that after market Toyota parts are inferior to oem, so its not an unheard-of problem.