Was wondering if anyone knew if there are any real differences between the 350Z and the G35? I know that the Murano and the FX35/45 are different even though they are built on the same chassis. A friend of mine has an FX35 with the same engine as the Murano (I assume it's the same as the 350Z) but that the engine has titanium lifters/valves and such to give it more robustness. Is it the same between the Nissan 350Z and the Infiniti G35? Just wondering.