Re: Omc?
OMC outboards are great, with only a few exceptions.
OMC stringer stern drives are not so good and very old/unsupported at this point.
OMC Cobra stern drives are good but also getting pretty old and more difficult to get support for than Mercruisers.
OMC Sea Drive bracket mounted outboards were an interesting product taking a basic outboard and allowing it to be attached to a boat with full transom...the Sea Drive specific parts are getting hard to source. The power heads and lower units are standard outboard stuff.
OMC was in the boat building business for many years also, they owned Chris Craft, Donzi, Four Winns and many other brands.
OMC also made many other products over there years such as snowmobiles, utility/industrial carts and various other things.
OMC ceased to exist in 2001, when Bombardier (BRP) bought the engine assets and Genmar bought most of boat brand assets.
Provide more information about the OMC engine you are looking at to get a more specific answer.