You would have to search and read modding guides if any are available for this. Join a GT modding discord server as well, they are usually helpful places to get some pointers. People won't do the work for you though, and they'll expect some knowledge on how to extract and pack files and handle certain tasks. But if you're willing to do your own research and ask questions when you hit a roadblock and not just ask for the a-z of how to do something, people will generally help you on discord.
