If you plan on upgrading things to do your own sort of spirited driving or track use, then forgo the sport package and upgrade away. If you are just going to drive the car pretty normal you don't need the sports package, but it is a hell of a deal for the money if it can be had. Up to you though!
I chose the NISMO Ed. and added my own electronics and sound. Good luck!
__________________
 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
|