I have a Chevry Celebrity with a 440 t-4 transmission that is shot. I have a transmission out of a 1986 Buick?

Electra that is what I believe to be a 4T60. The question is would the Buick transmission be an exact replacement for the Celebrity?I have a Chevry Celebrity with a 440 t-4 transmission that is shot. I have a transmission out of a 1986 Buick?no it would have to be a pontiac 6000,olds ciera,buick century they were basically the same mechanically