I know a member of a group that might be able to help u with such things as hi- rail a WMF group member by the name of Adam if not a few group members of that group and their patreon that have been testing the Hi Rail vehichles that might be useful in being the vehichles and models u seek mabey u might seek out WMF and the WMF patreon along with a Patreon containing the Hi Rail Mods in development and Testing and offer ur help in working with them to test their Hi Rail mods