The weight savings is 23 lbs. As an alternative to CF, you might think about finding aroof panel from a 924 without the sunroof. It weights almost the same and doesn't splinter like cf under impact. Be careful about setting anything on it tho, as it has the tensil strength of aluminum foil.

Regards,

 

In the article it says John Clark's Motorsports of missouri. where he got the carbon-fiber panels done.