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Old 08-20-2009, 10:05 PM   #7
camarohead
 
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Drives: 2010 ss rs ls3 red-white rallys
Join Date: Oct 2008
Location: Mississippi
Posts: 729
question- i have ordered an ls3 and also the gmpp exhaust. should i wait after break in peroid before i install the exhaust or just install the exhaust upon arrival. does it matter?
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