Yes,

Stak cases are MULTI speed, but they do NOT offer overdrive in any of their cases except the Dana 20 / Dana 30 based ones.

The Dana 20 / 30 overdrive (saturn OD) requires the load to be removed (i.e. push the clutch in or put automatic in N) and a manual shift. This is NOT condusive to the intent of using it with an automatic transmission.

What I would like to see is an electric shift that can be done under load, like the OD unit that is built into an AOD tranny.

Thanks