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Old 07-30-2012, 12:19 AM   #5
LoneStar


 
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Drives: 2011 IOM Camaro
Join Date: Jul 2010
Location: Texas
Posts: 4,394
Quote:
Originally Posted by NoynuR View Post
Its the quad exhaust system that is optional.
As far as I know, dual-mode exhaust = quad exhaust from GM.
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