After I bought a second hand Lycoming 320 and then a Lycoming 360 who were both not to the necessary quality standard (both crankshafts were bent due to damage).
I bought a new Superior 10-360-B1AD2 engine from NORVIK. This engine is more or less a clone of the Lycoming 360 with 180 HP.
This is not a rotary engine like the original Oberursel or LeRhone engine. But nowadays it is better to use an engine which is available with available spare parts and reliable.
We are working on a system to make it look more like a traditional rotary engine usisng plastic 3D copies of the original engine made by S-Scan.