Hmm. I'm not sure I'm ready to don a tin foil hat just yet but I'm afraid the fact someone has cobbled together what is, admittedly a very nice and plausible picture, isn't proof of this strange hybrid to me.
The picture was out there long before the OBL raid and subsequent images of the wreckage, coupled with the fact that the US 'required' Pakistan to return the wreckage (of an ordinary UH60, would they really bother about it, if it were not 'modified')
You don't believe that the US would develop aircraft in secret and manage to keep it secret for such a long time.
Nighthawk ring any bells?
Please enlighten me of your reasons for your doubt of the aircraft's existence and what type helicopter the wreckage came from, otherwise my tin foil hat is staying firmly in place.