http://www.youtube.com/watch?v=R3VlFXABzyc
No back seat, reduced interior comfort like the Z/28 i.e. track car.
Basic radio (just like Z/28).
Comes with a special key that adjusts engine parameters for the track i.e. track car.
So I guess in one perspective the Z/28 is more of a daily driver car since it has a back-seat.