Thread: NBS Big 3 upgrade
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Old 05-17-2006, 12:43 AM   #45
rigamortis
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Join Date: Apr 2006
Location: Okmulgee, Oklahoma
Age: 26
Posts: 127
Re: NBS Big 3 upgrade
how exactly does this increase mileage?
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2002 silverado ext cab
4.8L Z71
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