1995 Mercury Sable i need to change my broke transmission

Transmission problem
1995 Mercury Sable 6 cyl Front Wheel Drive Automatic

hi

i am trying to get a new transmission but in the store doesnt have my model. they have 1996 and 1997 but those cars are different. is the transmission the same?. if it is different what car has the same transmission.

my car is 3.0 cc

thanks