Chevy and GMC Duramax Diesel Forum - View Single Post - MBRP Exhaust
Thread: MBRP Exhaust
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post #3 of (permalink) Old 12-03-2019, 09:55 AM Thread Starter
Herk537
 
Join Date: Nov 2019
Posts: 6
What is the big difference between the 4" and 5" besides the size.
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