Originally Posted by AntonLargiader
To answer the underlying question: your transmission internals will fit into any other M94 case (obviously) without changes.
They will fit into an M97 case once you have upgraded the input shaft bearings and the rear intermediate shaft bearing.
They will not fit into an M93 case at all.
You can probably use your existing cover with any rear case, but the appearance will be different (M97 is thicker and has a different finish).
They will also fit the M96 that I have with the use of what I think is called the "clean bearing kit" from BMW. It has a 3mm spacer to compensate for the greater depth of the taper bearing.