Help in creating Armor Mod for the Ark

Hello, I recently wanted to create a mod for Ark, adding a completely new armor with my own model, etc. I just do not know how to do it. I can create a model of armor but I do not know how to add it to the game. I wanted to use the ark dev kit for this and I wonder if it is possible to use existing armor in the game by replacing their models and saving them as a new one. Does anyone know how I could do it?
Please help.
And whether assets purchased in the unreal engine store will work in ark?