I can recommend Yankee Motors in Nürnberg. They do ONLY US Motors incl. Clevelands
They did my motor..block, crank, flywheel, added the additional oil restrictors, all fully build based on my parts. Bore only 4.02!!! on Ross custom pistons. Build the engine, validated via "schleppen" and measuring the electric power consumption, and oil pressure.
You can bring your own parts or have them do it all, the latter gives you warranty.
Did ship motor by fright ap 100€. The Geschäftsführer is Mr. Müller, good guy and very knowledgeable, give him my regards.
The senior mechanics is also Mr. Müller (II).
give me a call for more info.. 0152 0309 2434