Has anyone had any success replacing vehicles in Trainz Mac? I have been trying to replace modern autos (in USA region) with 1930s era autos. Simply replacing the KUID numbers in config.txt file for the region doesn't appear to work. The 1930s autos never show. You can add them as static props, but I can't get them on the roads. Is there some trick I'm missing? Appreciate the help.
Jim
Jim