This is the safest place to find the x360ce.zip file. Look for the "Releases" section on the x360ce GitHub page.
Are you having trouble getting a to recognize your remapped controller? x360ce 41000 link
This happens because the game sees your real controller and the emulated one. You may need a tool like HidHide to hide your physical controller from the game. This is the safest place to find the x360ce