Mercruiser 7.4l Horizons ECM

Any help appreciated need replacement ECM mine died day of sale, started for water test ran great. Now ECM is dead. Removed port and installed on Starboard and its good so believe 100% ECM issue.

I did find one for 5.7L and apparently they can be flashed for different maps. Would love to find direct replacement

If anyone has a lead on where to locate would be greatly appreciated

Thanks Jamie

 

Yes told the same by Mercury, I did have a small problem where I gave engine serial numbers and told them they were 7.4 merc horizons but ECM was flashed for something else.
ECM sent back and is programmed fingers crossed correct and will be back in boat tomorrow. This Boat is Sold to honestly the most patient and understanding buyer I've ever met so hopefully its all done tomorrow and boat is on way to new home.