It’s good to hear that you have found a solution that will quickly get you back on the water, Tim.
When you get the replacement installed and operating, could I humbly suggest that you obtain a workshop manual for the original engine and rebuild it, as a self-educational hobby project. Should you succeed, and sell it on, you will be able to recoup a good portion of the cost of the replacement.
The membership association for owners of Dufour Yachts