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					Originally Posted by Tool Pants
					
				 What is the source of the info that a 2003 muffler sound any different than a 2.5 muffler? | 
	
 
FWIW, I have heard the difference in tone from a pal's exhaust when he changed from an 01 muffler to an 03.  The tone was different.  Noticeably nicer raspy growl at lower rpms, no difference in higher rev range, however.