I have done it on my cougar. Reworked the wiring harness to run EDIS. Uses the same coil, the DIS module comes out and the EDIS module has to mount on the inner fender wall. If you have the 94 you should have the crank sensor and harness. The 94-95 motors have the sensor mount cast into the timing chain cover. The 89-93 had a bracket that holds the sensor. If you keep the ECU from the older car I think there is a change with the PIP wiring to make it work, I will have to look at my wiring diagrams to remember.