So it seems his website is down for updates.

The engine is based on Novarossi. Massimo bought up the molds of the crankcase, carburettor and all other stuff like left over parts to be self supporting. Not sure if he is still living on that but with the new rods and AAC sets it looks to me there is lots of new production going on. So far I know as also in the past with Novarossi he had no production so I think all production is done by other companies. On the Italian FVSS shop you can find parts for the engines and so part numbers.

If you want to know more then you just have to contact them.