SD45 Trona railway SPEED

Extract the file called SD45TronaSPEED from the archive and paste it to this path:\RailWorks\Assets\DTM\SD45T-2-SP\SD45T-2-SPAssets.ap\RailVehicles\Diesel. To open the file "SD45T-2-SPAssets.ap" use the 7-Zip archiver
Then you need to copy SD45T-2_SpeedLettering.GeoPcDx and RoofDetails.GeoPcDx
to this path:\RailWorks\Assets\DTM\SD45T-2-SP\SD45T-2-SPAssets.ap\RailVehicles\Diesel\Engine_SpeedLetering. Now paste this file into this path:\RailWorks\Assets\DTM\SD45T-2-SP\SD45T-2-SPAssets.ap\RailVehicles\Diesel\SD45TronaSPEED
Now everything should work, enjoy!