I have a 3.0 mercruiser I'm thinking of swapping, serial 0L319125. It's currently setup with a mercruiser 120 outdrive. The outdrive is in good condition so i want to find a motor replacement for it; what options do I have for the engine that would be compatible with this outdrive, in the event I can't find an exact replacement? Obviously I assume it would have to be another mercruiser engine but as far as year/hp/liter I wish to know what my options are, if any. Thanks!