Ride height?

[thstone]

The Boxster Spec rules specify the measuring points (I am quoting this since we're in the Racing Section);

Ride height minimum 90 mm front and rear as measured at front cross of aluminum cross member and front-to-rear braces near rear sway bar.

Of course, there are a myriad other ways to measure this.

[Topless]

From personal experience I think 90mm is too low and 100mm is probably pretty close to my current setting. Add in a bit of forward rake and front tire grip improves dramatically.