Hello, You have 1 narrow band sensor upstream of your catalytic converter so one our single narrow band EFIE?s would work. The ?Quad Digital EFIE? is what I would recommend however, it has the digital circuitry and it?s the most versatile if ever used on another vehicle.
If you are installing a MAP or MAF Sensor Enhancer on this vehicle also, you probably need are frequency based unit. To find out if your MAP or MAF is frequency based (alot of Fords are) you can call your car dealer service department.