I have a full plate personally, however I noted the Cherry Valley group or some in it, were interested in PRR Silverliners.
I personally would be interested in both Silverliners and Metroliners PRR.
It suddenly struck me if anyone has the enthusiasm to pursue the issue, OK Engines probably can make a scale prototypically accurate body. The need would be for the ends, pantographs and trucks, powered and nonpowered.
As far as the Metroliner specifically is concerned, perhaps Lionel which made a shorty can, will supply parts.
With my ongoing layout rebuilding and Silver Meteor project, I have more than enough.
I would like to believe someone on this forum would be interested.