That is a Great Trains G scale model. It was 2 1/2" too short. So I just added the section with the brake fan to it. It originally was painted for PRR!
I opened up some of the venting and exhaust to help the look. I think I will replace the grabs with finer wire. Most of the lights were dummy only. I will have most of them operating. I added ditch lights already to the front.