Yes, it has a Ford V8 under the hood. According to the museum, this Berliet was bought in 1923 by a Danish engineer, Hermann Wanhö. It was a modern car with four-wheel brakes, oil gauge etc.
The building where it was stored burnt down in 1924. It was restored, but it did not receive an engine.
In 1935 a Ford V8 was installed. Then a company bought it and then it was bought by Sofus Larssen who handed it over to this Swedish museum in 1938.
Unfortunately they don't know the coachbuilder.