Hey mate, im from sydney but all my gaskets i get from nissian genuine parts and they seem to ship them up from melbourne so i would hit up nissian genuine parts just look for a dealer near by you with a parts section? There about $100+ dollars not cheap (cant remember exactly $$$) While your there u can change the exhaust studs aswell there cheap about $2 each. Just give the head and mani a good clean before you put it together and then just inspect and clean up. What model/motor.