This is an N scale loco shell. I played with this 1968 CP version when I was a kid and modeled the shell as practice in fusion360. In N scale it is only resin printable, but if you scale it up should be a decent HO model.
It's neither a perfect EMD replica, nor a perfect aurora replica, but it fits perfectly on the real chassis and I've even managed to duplicate the tiny bolts on the original model.
loco_v2.stl | 10.1MB |