I peg it at the speed limiter almost every weekend at the track. Be careful, it turns into a "floater" at about 140. I'm thinking of a front and rear (ugly) aero wing just to keep the butt on the ground at those speeds, especially when you have someone passing you at 20+ faster...

PS: getting ready to go to the track right now. Sunday against a bunch of Spec. Miata's is much more fun than the "Honey Do's".