Just to add some balance, I don't agree with the above. It's an NA car, it won't have the punch of a turbocharged motor. The power band is different, so you'll have to adjust your driving style to get the most from it.
The engine might seem asthmatic at the higher end of the rev range, but I've yet to drive a V-configured 3.XL NA which doesn't. The low-down torque however does make up for it.
The chassis is beautifully weighted and the steering very sharp and refined. You can hold some mighty big powerslides too .
I've had quite a few hours driving the 350z in standard and modified form, and it's a fantastic modern coupe. All these people saying "oh no, it's a Renault engine!" might want to take a step back and do some reading. Not only is it a Nissan developed engine, but even if it was a Renault engine what would be the problem with that? Renault have and do make some brilliant cars.