Silly question as I know that most of the cars would be factory air. However, when I went to get a replacement AC clutch for my 93 5.0, it looked nothing like the clutch assembly that is on there. The clutch that is on the car has the infamous .25" rubber gasket that looks like it was shredded pretty good between the clutch and the pulley. At any rate, if I buy one of these clutches that doen't look quite like the one that is on the car, what are the chances that it will work. The compressor on the car is Ford, and original, but is it dealer? Therein lies the question........