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					Originally Posted by BYprodriver  Incorrect wording.  Fabspeed makes a muffler with 2" inlet pipes & mid pipes to connect to it. Fabspeed also makes midpipes for oem mufflers. (1.75" inlet ?? ) | 
	
 
I believe that you're the one who's incorrect. So far as I know, the standard bypass pipes that Fabspeed offers for universal fitment are 1.75' diameter . The 2' diameter bypass pipes are proprietary in so far as they are part of Fabspeed's latest complete catback designs . Therefore, it is my understanding that they're  not only incompatible with oem and other aftermarket catbacks, but with earlier Fabspeed designs as well .