| Take a look at this [ http://www.twinturbo.net/nissan/300zx/forums/general/view/2259099/NA-are-4083-which-is-close-leaders-410-gearing.html ] No the increased RPMS aren't to bad from Stock if you rolling on 18s. I have zero noise from my but I maybe I am the rarity I love the upgrade. But my situation is different as I rev up higher and still have power until redline. If you are into drag racing you can goto 28" tall tires and still not fubar your gear ratio. I recommend them, just fyi if you they start to whine stop the car and have it done again you don't want a wear pattern. If you are interested you can send it to the shop I used.

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