I am not sure even if you would buy the lights that they would work in any Focus but the ST ST3. I have a ST3 and have put Sylvania ZXE high beam bulbs in to try to match the HID's that are installed and the harness receptacle on the light has many pins to connect them to the car's harness plug. Also, would the accent LED's, the side turning lights, or the HID High Beam shutters work in a Non HID Focus? Your only way to make sure is to get the wiring diagram for the ST3's and talk to the Ford accessory guys at a Dealer and get their input.
After market is the most likely best choice when someone makes a set for the Non-HID Focus.