In 2018, I purchased a 98 Sailfish with the original twin 225hp OX66 SWs engines. During the survey, it passed the compression tests with flying colors. I have no idea how many hours are on the engines but I completely agree with Fire93Medic. I keep them well maintained, flush them after each use with a salt-away type product to keep the water passages as clear as possible etc. Three seasons later and I could not be happier with them and hope to get many more years out of them. In March of 2020, I replaced both lower units but other than that, they don't hesitate to start and run like scalded cats!
BTW, last season I docked at a local restaurant and there were three other boats with the same engines. All of us ended up chatting on the dock about the engines and these other owners raved about them.