This model is a Louisville & Nashville Railroad reskin of Dick Cowan's Alco RS3. You can download the freeware model at: http://dickyjim.com/diesel.html. Britkits also has a more detailed payware version. Between 1951 and 1956, the L&N purchased 122 Alco RS3 models. They were used all over the system.
In the scenario editor it is listed as: x-RS3_sl_LN. A No Crew version is also included and has NC attached to its name in the scenario editor. This model is installed into: Assets\Britkits\ Alco\RailVehicles\Diesel\ RS3\LandN.
Unzip and install using the included RW_AssetSetup.exe installer.
Harry R. Adkins
January 2019