1999 F-150
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Joined: Dec 2007
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1999 F-150
Hello-Im new here,and have a simple question.What is the inlet/outlet size of the stock muffler on a1999 F-150.It has the 5.4 engine.I just want to put a flowmaster on it,and maybe in the future I'll put a true dual exhaust.Any help would be greatly appreciated!!!
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e150phanatic
Ford Econoline E Series
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Dec 30, 2008 09:19 PM