Unlike the VQ35DE series of engine, the Nissan 370Z Z34, Skyline G37 and Infinity Q50 is using the VQ37VHR engine, the rocker cover gasket may be just looks like other normal rocker cover gasket, but the plug seal is not using the 6 pieces type of oil seal type seal which use in the VQ35DE series.
The below photo is show this plug seal looks like. And the photo below the plug seal showing one side of the valve cover gasket for this V6 engine.