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Old 12-09-2012, 10:48 AM
WIexpress WIexpress is offline
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WIexpress will become famous soon enough
Default Which magnaflow #

I am looking to put the 18" magnaflow and y-pipe on my 12 express. Just want to make sure I get the right one. I have read stock is 3inch in/ 2.25 dual out. And I read 3 inch in/ 2.50 dual out. I found Magnaflow part number 12278, 12288 and and a few others. Just wondering which is correct and what you guys used. Thanks
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