Sound... you'd need to buy the OEM mercury exhaust system, if there even is a difference between them.
not sure about the 50hp increase, I'd guess it's in the exhaust or maybe a ported head.
I'd say exhaust and intake will give you at least 50 hp.
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1998 Ford Windstar GL 3.8L 253,100 miles
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Last edited by Flyingjackal456; 08-18-2008 at 02:29 PM.
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