I think that motor would be the 2+2 motor. Meaning two cylinders cut out at idle speeds and come back on at a certain rpm. Some users complain that the transition from 2 to 4 is a bit rough.
Pretty certain that this was a Mercury only and not a Force- Mercury hybrid. As the Force versions were 120 horsepower and did not have an L head design. The Force Mercury motors used the mercury lower unit and electronics but with a Force/chrysler powerhead with a removeable cylinder head. Cowling would also denote Force by Mercury in the graphics.
Brian
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