This is what I'd like to do with a Z-top equipped car.  All factory, and I think it would be amazing to do.  It's probably a very doable project with pieces/parts from a Porsche salvage yard. 
http://986forum.com/forums/performance-technical-chat/9114-official-986-996-front-end-conversion-thread.html
		 
		
		
		
		
		
		
			
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				I think I have a Porsche problem...
			 
		
		
		
		
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