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Old 07-14-2011, 08:33 AM
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mreid mreid is offline
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Join Date: Jun 2008
Location: Chester Springs, PA
Cobra Make, Engine: Kirkham 289 FIA #690, FRPP 427 Boss engine
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I agree with Brent, but they're cheap enough that you can always try them both and see which works better. Also, if it's heat insulation you are really looking for, go with the 1". Hood clearance may be your only issue.
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Kirkham #690 289 FIA
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