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New Times On 08 Gmc

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Old 02-29-2008, 04:22 PM
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I know a guy that put a fAST 90 on his STOCK trans am and gained 6rwhp and 2rwtq....meaning unless you have iother mods to go along with the intake don't waste your money.
Old 02-29-2008, 04:48 PM
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you need a good set of flowing heads to go along with a fast 90
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