Re: omc 3.8
OMC is out of business and parts and services for them will be harder and harder to come by. They went out of business about 98-99. The only OMC, personally, I would consider buying would be 94 and later. These were actually a partnership drive with Volvo Penta and basically everything is interchangeable with Volvo Penta.
Now threre are a lot of people still running OMC's and will be for years, but I personally wouldn't go out and buy one.
That's just my two cents.