Is the firing order on a 1991 Ford Mustang different from a 1992 Mustang?

What would make you believe that it would be different? That's a better Question.......... They are the same ( firing order) If you don't believe me ask your local ford dealer.

Answer

Check the Type of Engine 5.0,or 5.0(HO) they are different firing orders.For the regular 5.0 it is: 15426378.For the 5.0 HO it is: 13726548. The Rotor in the distributor turns counterclockwise.