Does The Transaxle Match Up Or Not?

First off, GM didn't make a Malibu in 96. Secondly, although the trans mount bolt pattern is the same, the engines are not interchangeable. There are too many differences to go into here, but the only real similiarities between the 3.1 in the 91 Lumina and one from a 97-up Malibu are the 60 degree V-6 configuration and the displacement.

You read the built date wrong and if the build date is november and up of 1996,it is a 1997.It will not fit,you will have to find a 1990-1993/1994 3.1.