mass air?

I'd look up the stats on the car. Wouldn't recommend using it if you have no idea what it's calibrated for or what size it is, so check that out first
 
front side is 3 1/4" wide and flange side is 3 1/2" wide. The p/n on the meter is f50f-12b579-aa afh80-01a
 

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I have the same MAF. Just bought it a little while ago. I've got a 95 Gt and I'm damn sure that the MAF is stock calibrated for 24# injectors.
There is not one single Ford MAF meter that is calibrated to an injector size.
Ford calibrated their meters to the ecu they would be used with.

Only the aftermarket meters are cal'd for injector AND ecu...