Yeah it is the modular head version. But whatever HP comes out of this beast it's gonna plenty for a Motobecane moped frame with lots of challenges and stress on the other parts surrounding the engine block.
My goal is always to find the right balance between power and reliability. So I've always de-tuned my personal H2o 50cc track engines on purpose. Never seized or broke one as far as I remember.
Same method will apply to this build, make it fast and torquy, but no need to push it to the extreme and find its limits.
Can't remember last time I posted here, but yeah it's been years and years since I signed off. "have a good life... see ya" or something like that :)