There are a number of modding sites for one of the favourite football simulation.
If you are looking to improve your game performance or you have ideas what you could add to your gameplay you can take a look at these sites who can offer you what you need.
You can visit this site if you’re looking for improved boots,new beter faces,new players,improved gameplay,stadiums etc.
There is a forum section where you can suggest what you need,there is store and there is files section of the site.You can register if you upload files,or you can go for free if you are downloader only.
Regular patches for game are included of course.
You can find forum,files and archive on this site.As youre looking for file you need you can also register on forum.
Another in the mods communities for PES.On this page you can find PES mods,NBA mods as well as FIFA mods.Take a look