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Old 10-07-2013, 02:45 PM
lippy lippy is offline
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Join Date: Apr 2012
Location: Bay Area (Peninsula), CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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I went with Chambered Classics. They are supposed to drain less HP and also sound better, but I don't yet have them on so I can't tell you from experience.
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