Laurence
I am sure others with more knowledge will chime in. But a 160 hp seems a little large for a 30 foot, 10,000 lb boat. Bay Pelican has a 135 hp Lehman, and my old Willard 30 ft sedan had a 42 hp Westerbeke.
Don't know if the larger engine will have much of an effect, other than a slight over use of fuel.
Marty
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