Tercel Automatic Transmission

i have a 92 tercel n i recently changed the motor of my tercel n installed pasceo motor...but with tercel transmission...
is it possible to install pasceo transmission or no?
at the moment my car is running on 3 speed...n i notice lot of waste of my gas....
n there is hardly any speed...
wat i would like to know is if i can install pasceo trany with pasceo motor...
is there ny difference with the mounting or any change is needed in the computer?

plz help me...........
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