Hey guys, I have been doing some research before I pull trigger on a used Z34. Something that has been concerning me is the Rear Timing cover oil gallery gasket. Does anyone know which year Nissan/Infiniti switched over to the metal composite gasket from the paper gasket? Also, if anyone has experienced this issue, do you guys mind telling me which year you have? This is something I would like to avoid if i can so your input would be very helpful. Thanks