Those look similar to the exhaust that I have from Top Speed. Take a look at this DIY thread, lots of good information on them. There is also a secondary cat delete pipe which I recommend.  
Top Speed's Cat Back System Installation
		 
		
		
		
		
		
		
			
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2001 Boxster S Lapis Blue 
TS Cat Bypass Pipes and exhaust 
iPad Mini Dash Install 
DEPO Tail Lights
			 
		
		
		
		
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