MAF = Mass Air Flow Sensor
VAF = Vane Air Flow Sensor
ALL escort GT's from 91-95 used the Vane type sensor. In 1996, The MAF was used instead of the VAF of previous years. (Thanks for the clarification Denis!)
a VAF is only a type of MAF. Specifically, it has a vane inside that swivels open farther the more air flows through, the swivel being attached to a shaft that connects to the sensor to tell the ECU how much air is coming into the engine.
a standard MAF has no moving parts, just a very thin wire element that sits in the airflow, and as the air flows past it, the wire senses how much air is flowing by how hot the wire gets.
But, the XR4Ti and 91-95 EGT both use the Vane sensor, not the wire-type sensor, and the holes are closer together on them.
--sarge