I'm not a Porche guy by
any means. All I know is that I don't like the looks of the Boxster. But--- this info/comparison may be of value for the discussion at hand:
This is a list of the recent Nurburgring track times set by cars up through about the middle of 2008:
http://www.fastestlaps.com/track2.html
The Camaro's time (still 'unofficial'), was 8:20. The 350z's recorded time was 8:26.
The CTS-V pulled a 7.59, besting the likes of the '04 Porsche 997 Carrera S...and a few other extremely lighter-wieght cars.....don't know of what use that info might be - so...just sayin.