Maybe you don't want a total conversion mod. Maybe you just want to add a specific classic team, or a specific boot pack created by a user on a forum. Most standalone mods require you to use File Master to import the files into the _data_0 folders.
This tool is the Swiss Army knife of FIFA modding. It allows you to open, extract, import, and edit the game’s massive .BIG files (the containers for all game assets). Without File Master, modding is nearly impossible. With it, you can edit databases, replace adboards, change menu backgrounds, and install super-patches. fifa 14 file master download
or unofficial winter transfers to fix missing names or textures. Broad Version Support: Maybe you don't want a total conversion mod