transmission on 1991 Ford Mustang LX

Bought an LX but transmission is gone. What kind of transmission does a 2.3 motor automatic use?

Asked by for the 1991 Ford Mustang LX
The 2.3L 4 cylinder engine uses the A4LD automatic transmission. This particular unit (with no changes) was used in 1991-1993 2.3L 4 cylinder Mustangs, and also in 1990 California Emissions 2.3L 4 cylinder Mustangs.

NOTE WELL that you cannot interchange the A4LD from Ford Trucks with this transmission. They differ.
Thank you so much for your assistance