The air filter is the same panel as a Commodore.
Oil Filter, I think, is the same as the R31 (Ryco 145A).
Fuel filter is the same as some other Nissan (can't recall which one, but easily obtainable thru Autobarn, etc).
Thermostat is the same as a VL Turbo (even comes in a nice "Nissan" box)
When all else fails, your friendly Nissan dealer can get any part you require, as long as you can quote the VIN at him.