I did a bit of horse trading about a year ago and got two of these Proto2000 GP9/18's. I sold one off and kept the other for a bit of modification.
I replaced the high roof fans with some details west parts, added the spark arrestors and high hood bell (minitures by eric parts)
I weathered the engine with a light spray of poly-s grimey black on the trucks and lower body, then switched to poly-s dirt to give the trucks, pilots and walkways a bit of color. I finished it off with poly-s steam power black on the roof to simulate diesel soot
I replaced the high roof fans with some details west parts, added the spark arrestors and high hood bell (minitures by eric parts)
I weathered the engine with a light spray of poly-s grimey black on the trucks and lower body, then switched to poly-s dirt to give the trucks, pilots and walkways a bit of color. I finished it off with poly-s steam power black on the roof to simulate diesel soot