Thread: Super Duty Forum:
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Old 09-01-2017, 03:29 PM
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Transamric Transamric is offline
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Join Date: May 2006
Location: Western WA.
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FWIW, the 3/73 MPC catalog printing shows #492428 as the original '73 S.D. muffler, making your later number indeed a Service Replacement part.

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