Re: Alpha exhaust
I heard that GM already put in a GM performance Division Cold Air intake and Performance Exhaust. I heard of a guy in Vegas at Towbin Hummer who put a Magna-Flow and it sounded meatier, but actually cut performance.
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Happy Trails......
Allen
2008 Red Alpha H3 w/ Nav/Back up Camera/ Offroad Package/Rocker Bars/ Underbody Protection Kit/ Locking Rear Diff/16X10 American Racing Rims/33" Yokahama MT's 
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