This is an old thread, but if the topic is still relevant, I don't see any reason why it shouldn't be bumped. So before you forum nerds start posting crap like, "thread necromancy" and etc, at least the person who bumped it did a search instead of creating a new thread.
With that said, I always felt the 370Z was a bit difficult to drive in a smooth fashion. For example, when I'm in my friend's old manual Hyundai Sonata, he could drive that thing as if it were an automatic. No shift jerks or anything. Even when we're on a hill, he can launch it w/o any rollback and still be smooth. It really depends on the car and the driver. I personally drive a bit rough, especially in my Z. So I notice my passenger's head bob from the corner of my eye when I upshift. I try to be smooth, but sometimes it's hard to find that sweet spot clutch engagement point.
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