Ciao Mario! Benvenuto!

Il kit nismo e' un po' bruttino dietro, comunque e' fatto per attacare meglio la Z ad alta velocita dove e' leggera. A parere mio, l'alletone e il davanti sono molto belli. Nel mio avatar, la vedi la Nismo della ultima versione. Le differenze sono anche un po' meccaniche. Se vuoi saperne di piu' della differenza della nismo, ce il link di sotto.
http://www.edmunds.com/insideline/do/Drives/FirstDrives/articleId=119709Oltre al esterno, le differenze meccaniche.

Chassis tricks from Japan
The chassis of the Nismo 350Z has been developed by Autech, a Japanese company that produces specialty models for Nissan and also prepares Nissan's entries in the Japanese Super GT racing series.
Autech welds up some of the seams in the Z-car's body to increase structural rigidity and also installs the usual strut-tower braces. The Nismo 350Z also features special Yamaha-built mass dampers between the left- and right-side frame members beneath the unit-body chassis to control vibration in this new, stiffer body. This is technology adapted from the mass dampers Yamaha formerly supplied to the Honda Formula 1 team.
There are plenty of signature Nismo pieces within the interior, but the car is more noteworthy for special exterior bodywork developed by Nissan for racing, including a front aero splitter, a front bumper cover, rocker-sill extensions and a dramatic rear treatment with a wing.
The Nismo 350Z rides on lightweight forged wheels and carries 245/40R18 Bridgestone Potenza RE-01R tires in front and 275/35R19s in the rear. Specially tuned springs and dampers are part of the package.