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2.5" vs 3" downpipe for GT

01GT guy

New member
I have a 2001 grand prix GT that needs a new catalytic converter. ZZP is out of 2.5" downpipes right now, and only the 3" is available. Should I just get the 3" or wiat for 2.5"?(don't really care about the price) Or is the 3" much louder than the 2.5"?
 


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