I have created four static numbered SD40-2s for the Searchlight Simulations model from NS. These engines represent the Montana Rail Link in the Operation Lifesaver paint scheme. Engines 262 and 265 are weathered, while engines 263 and 264 are clean paint. Below is a representation of the weathered version which has faded colors, dirt and rust added. The clean version will have a brighter paint job and clean surfaces. These engines are great for running down either of the Montana Rail Link routes.
Make sure that you have the NS SD40-2 from Searchlight Simulations. Copy the MRL_26x_OLS folders to your install. Copy the GeoPcDx files from both the Engine and Cabview folders from the NS folder into each of the MRL folders.
https://www.dropbox.com/s/eed00y36wyfmi7m/MRL_SD40_OLS.zip?dl=0