How to Change Crafting and the Economy (Far Cry 3)

change crafting and economics. What files to find and how to change. I want to create my own craft. Who can write for more details. I know to open shoppingitems.lib and craftingrecipe.lib, but I don’t know where these files are located. I've been looking for a very long time, but I can't figure out where they are. Tell me pliz who is not difficult