He will definitely be molding it more to follow some of the Boxster's lines like the rear curvature of the door for example.
They are more closed off to provide a ram air effect instead of being so open like the stock (and some aftermarket) scoops are now.
As to seeing the stock grills you will probably only see it if you are looking down the scoop like the picture and you always have the option of pulling them out and adding mesh or something.
For the street the front dam is probably just a speedbump hazard but on the track it might actually help and of course as stated....for snow in the winter.
Useless? These might useful if they do provide a decent ram air effect...of course they'd probably be like on motorcycles and only make a difference at higher speeds close to 3 digits and above.
Thanks for all the replies. As I said they are in the very rough initial stages so there will be quite abit of tweaking and modification.
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