@D500 posted:It does indeed have a keystone - I should have gotten a pure head-on shot (maybe I will later). I have thought about attacking it and trying to put a better "driver section" under it, plus a 4-wheel pilot truck, yielding a streamlined "Pennsylvania Hudson", but I'm not sure that is legal.
Not only legal but would be placed in the P class of locomotives. PRR always needed proper P1-P4 locomotives to get the P5 electric. I think it is a cool build.