simmo413 wrote:I thought the UP ES44AC I used in the scenarios came with the game!
Me too... UP, UP Heritage and Black liveries came enhanced with headlights as built-in, though with the same RW2 basic model. The payware DLC pack I know is the "BNSF Officially Licensed ES44AC & SD40-2 RailWorks Add-on".
Edit later: I just saw on Steam Store the "Railworks 3: Train Simulator 2012" product. The first screenshot (external view) is of ES44AC UP Heritage, but the second (cab view) is of ES44AC UP (I guess the hood is of UP, not of Heritage), so it looks like ES44AC UP (folder \railworks\Assets\Kuju\RailSimulatorUS\RailVehicles\Diesel\ES44AC\Default\Engine) is a default (buit-in) engine and livery indeed.