What are you talking about? Just because some variants have sanav and/or a moonroof, doesn't mean they built his/her car wrong. if you didn't pay attention to the above posts, satnav and moonroofs are both factory options. Mine was built the year before, where i demanded a moonroof which incurred $1800, with a satnav it is $5000 which I wasn't willing to pay. All in all, your zr6 which falls into the pre-facelift range isn't any different to the facelifted zr6 in terms of options.