Thread: Side Pipe diameter
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Old 03-24-2004, 01:39 PM
bobl bobl is offline
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Cobra Make, Engine: Don't own a Cobra. But love them so much, am Chief Operating Office of a company that builds them.
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4" OD for big blocks. 3" OD for small blocks. Thats what we use, and its the sound tht gest into your soul when they're tuned.
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