Those are very nice engines. I have seen you show them on a number of facebook groups. Are they available as castings sets, or do you only sell the complete engine? I am making the assumption you are the manufacturer - apologies if I have that wrong.
We do not sell castings. As a rule, we build ready-to-work engines. Possibly machined parts to be assembled by the customer.
Yes, we manufacture the motors ourselves. 99% of the elements are the work of our hands. We cast the elements ourselves (we have a furnace), we process all the elements ourselves, we assemble them ourselves. We also promote our engines ourselves. We do everything in two!
Thank you for appreciating our work.