Well, Porsche saw fit to use a composite of some kind for the bumper wraps. I guess if they use a steel hood then it's not purist to replace w/ CF, but I've been jeepin' for awhile & the standard in that community is to upgrade whenever something breaks. CF is de rigeur in racing, so as long as it fits and it can be painted to match the rest of the body I have no problem using it. 20# is 20#.
I guess I won't post any pics until the amber's gone.
It's a good thing this ain't a 911 forum.