I've driven my Z over 160, and I've also driven a few Supra's (a stock one at 150, and a BPU'd one at 160ish). They still feel so disconnected to me at even high speed. The rear wing didn't seem to help plant the back end that much more to me like I thought it would. Even SW says when he owned the SR-71 (#007) it was one of the most stable cars he has driven at high speeds (this comeing from a guy who holds several top speed records in Vettes and has driven just about every exotic). I'd be curious if his opinion has changed now that he ownes the quickest/fastest IRS 6 spd Supra.