I've gotta 170 (470) also. Im with CY, if its running good, stay outta the hood! Changing the intake and exhaust would put undo pressure on the engine. For me I wouldnt change it. Maybe rebuild that 190 and keep for later use.
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77 V20 cuddy with 170 I/O Mercruiser
72 16ft. Carolina w/a 25hp Evinrude
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