oscarsordo50,
Your car, you get to do what you want. Having said that I will add I very much appreciated the thought, the planning and the effort that went into this modification. Cutting a hole in the side of one's auto is something very few are are capable of doing and besides requiring a steady hand it also requires a committed owner.
In your case, now that you've posted more photos of your Spider, I completely understand the use of carbon fiber. I am wondering though, would these vents be less obtrusive, less objectionable to some if color matched? In either case, personally there's no way I would mess with or alter the beautiful body lines on my Abarth.
I also am intrigued by and find the additional air deflectors an interesting touch. How are they attached to the glass? Do they provide noticeable functionality? Is there any increased wind noise with them? Where did you get them?
(My apologies for bustin' into your thread like this

)