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As to the mufflers I really like the Dynomax Ultra Flows. Not too loud at cruise but wide awake at wot!
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Thanks. I'm really more interested in actual performance gains more so than sound.
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"2015 Pontiac Nationals "Chief of the Pontiacs" Champion
2009 HPP Magazine P2 Class Winner Englishtown, NJ
69' Firebird
492 CI E-Heads, 3.73's Street driven
Best - 10.21 @ 128.98
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