Probably Larger
During the 80s Hunter tended to undersize the primaries. Our H-35 came with 24s and they were replaced with Lewmar 43s which, by the way, the H-35.5 came with as standard. The primaries need to be sized according to the headsail size and one can get recommended winch sizes easily by going to, say, a Lewmar equipment catalog or looking in a West Marine catalog. That is how I did it (plus talking to people) and came up with the 43s. The 43s are much easier to use than the OEM 24s. The 24s were moved aft for secondaries.When mounting the new winches you'll have to drill new holes. Hunter has an aluminum plate embedded in the fiberglass. When tapping, and probably drilling, into aluminum it is best to use a tapping oil designed just for aluminum otherwise the tap will wear out in no time, and maybe even break off.Plug the old holes with epoxy.When centering the new winches for mounting make sure there is enough room between the winch and the side of the winch pad for a line otherwise it could get jammed.Bigger winches are nice!