120 mercruiser

Hi Guys, on this new, well not new but you know....76' center console I bought, what kind of performance can I expect with the 120 mercruiser that is on it now, I have to replace the outdrive with a new one (i have 2 spares) and I am curious what to expect, I am sure that little 2.5 liter engine just sips the gas but will it get me there and back with a little style and speed