I get the impression that replacing an engine in a modern car is fraught with difficulties.
Even replacing it with an identical model engine, you can have VIN number problems, as the computer could be checking the number on the engine against that on the car.
Putting in a different engine means mismatch problems with motor mounts, transmission, etc, but the biggest issue is the computer. Old one won’t work with a different engine, new one could have problems with a different transmission, VIN number, communicating with the other computers in the car, etc, etc.