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Old 12-29-2009, 06:06 PM
alffie alffie is offline
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Join Date: Oct 2007
Location: Darwin, NT
Cobra Make, Engine: Classic Revival Kobra,LS7 427
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The AN dash series is the OD of alloy pipes, so all -4 alloy pipes are 1/4 inch OD otherwise you would need differnt sleeves for 25thou, 32thou and 53thou alloy pipes.
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