Most oxygen sensors are interchangeable as long as they have the same number of wires (the sensors, not the connectors).
Anyone with a little soldering skill and some shrink tube can buy generic O2 sensors for chump change and just splice them together with the connectors from their old sensors.
Also, all Fords that I'm aware of (meaning up to about 2003 or so) all use the same O2 sensor connectors, so you can get a 4-wire O2 sensor for any F/L/M gas vehicle, and as long as the wires are at least as long as the stockers they will work in your ATX just fine. For some you'll probably have to tie up all the extra wire.