Thank you!

The part number for the MB remanufactured valve body and conductor plate is 140-270-06-06-88

I don't have the part # for my TCM yet , but will take a look tommorrow.

Does anyone know if it is possible to update my original TCM via HHT with new firmware?

The dealership doesn't have any experience with this, though they may be willing to try to use their HHT (however it doesn't sound like they are aware of any update software for the existing unit).