speedmonkey... i hate to say it.. but you dont know what you are talking about.. the g and the z have the exact same motor... I would know.. I own a g35. the only difference in the motors stock... is the intake. the g35 has a resonator in the intake to lower engine noise.. the z does not. thats why its a popular mod for g35 owners to buy whats called a "z tube" which is a stock 350z intake. 350z with cold air intake = g35 with cold air intake... same shit. 05 g35 is a differnt story.. (diff cams, diff plenum, diff intake)