RK - I'd go w/ CS for what you're doing. If anybody flips you any grief call it a CS "Tribute". Tribute - that's what the earlier 911 guys do when they build their car into something it wasn't. And I don't hear anything but "Oohs and Ahhs" over a Tribute car done up nice.
BTW - I'm still interested in the goodies we've discussed earlier when you're ready to move them. Those pieces are part of my Boxster GT "Tribute" I'm building.