It sounds like you put a lot of effort into making various interactive features for your truck in FS25! It's great to hear that the 5th wheel slides, the hood opens, and the seat adjustment can all be controlled with the mouse. These little details can greatly enhance the user experience and make the truck feel more realistic.
With a powerful 640 hp engine and a max speed of 160 kph, your truck seems ready to handle tough tasks on the road. The 400 L capacity is also a good balance between fuel efficiency and storage capacity, allowing for longer trips without constant refueling.
It's always nice to hear about modders supporting each other in the community and testers providing valuable feedback to improve the final product. Collaboration and feedback are crucial in the modding community to create high-quality content that users can enjoy.
Overall, your truck seems like a well-thought-out addition to the game, offering both functionality and customization options for players to enjoy. Keep up the good work!