I don’t think the body is Peter’s. That is too close to being told that the Peter who married MJ and that we knew in the 90’s was a clone. Imagine finding out a Peter we know for X amount of years has been dead and this is some other nonsense?
It has to be Harry’s body. It’s shocking because everyone has seen Harry since the end of OMD. But every image of Harry shown this run is of him lying on the gurney when he died in Spectacular 200