I know someone else suggested the ALP-45A a while ago, but I want to bring attention to it again now that the Morristown Line is available for TSW 6. The specifications of the 45A are practically identical to the regular ALP-45DP, save for EPA tier 4 compliance. However, their biggest visual difference is lunar white LED headlights versus the warm white incandescent/halogen bulbs on the older locos, along with LED cluster marker lights. Furthermore, locomotives 4543 onwards have an Alstom decal in place of the Bombardier decal, reflecting the buyout of Bombardier transportation and its manufacturing contracts. It'd be cool to see one of these pop up on an AI service in TSW, especially at night. (Fan Railer, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons)