Ok now ist seems to be easy...
This is indeed a Mi-2 version!!!
It's the first prototype to develop a "new" Mi-2 from the eighties.
The project is also known under the name "Taurus". The dynamic components and most of the airframe is originally Mi-2. The nose section and the engine deck were new designed to house new engines.
The project was soon cancelled. Later it was a forerunner of the "Kania".
I found the wreckage 1992 in Swidnik in a forgotten corner...