I've checked out too and glad to know obout a new engine manifactuer, but i did not undestand how Tecnopower is related to old GRP engines, even if I see a similar one on the home page.
It's not even a direct answer of my question about piston/sleave sets alternatives, as i only needed to know if Ninja MR's or Falcon B5's are the same as original GRP's ones.
Maybe it was an invitation to directly contact you tecnopower.....
Anyway just waiting for someone who has info about eventual differences between the ditto P/S sets.

Thanks again
Fabio