I finally got around to looking at this engine. First thing I wanted to do is take off the valve cover and oil pan and see what it looked like inside. l should mention now that I am a certified aircraft airframe and engine mechanic. Let me say that overall, I see a lot of potential in the design and execution. There are definitely some quality control issue still to be addressed though. For example, the engine had a significant amount of contamination/metal dust/residue under the valve cover and also in the crank chamber. I put the engine in a pan and hosed it out with kerosine to flush. Then, while checking the valve clearance adjustments (they were pretty good) I found an extra valve rocker spacer (the little brass tubes) rolling around under the rocker shafts. Not a good sign, Enjomor.
I've got the engine mounted to a stand and am getting ready to run it. I will write more later. Let me say this: I knew going in this was a project for and experienced and knowledgeable person and I was correct. Do not expect to get a turn-key engine. Also, obviously I have no idea how the engine will hold up in service. I'll let you know more later.