Feature differences on Base vs Sport vs Touring on 7AT.

UNKNOWN_370

Its $3030 in the states for the sport pkg.. There's the Nissan Cars, Trucks, Crossovers, & SUVs | Nissan USA website I posted right here before and I'm posting it again so you don't have to misinform people. Invoice price is about 2700.

To answer why it is a must. The tire and wheel setup bring the Z from .94g on the base model to approx 1g. The Lsd Is good for aggressive street and light track. Anything more it needs to be replaced. The rims are made by Rays Engineering, Japan's Premeire wheel maker. Aftermarket the rims alone are $540 each. The RE50A rubber around the Rays wheels are worth about $1400. Throw in a LSD and you saved a decent amount of cash. But it doesn't stop there...
Though the brakes need a brake cooling mod for heavy tracking, as well as new pads rotors and brake lines. They are extremely capable on the street. The Z has the shortest stopping time of all the affordable sports cars. 60-0 in 102ft. (103ft for 2009 &10models). On street duty, they never fade and the only mod necessary for street is the steel brake lines which can be bought through Z1 for about $115 give or take a few bucks.
For the track they will need a little more but its still very cost effective... Even with having to put about a grand in mods to the brakes for track excluding the brake cooling duct. Performace rivals. $4-5k brembo and stoptech brakes and are well worth the money and a little upgrading elbowgrease...
So $3030 gets you 14" 4 piston Akebono brakes, Rays Engineering (owns Volk) ultralightweight aluminum wheels 19x9F 19x10R and wrapped with high end rubber. You get the good for street LSD and a great look for your car. The stock wheels are highly unimpressive on this car.