Ripped the box out of the missus KA today.
The new box we went to put in looked identical, even had the same part numbers stamped onto the casting of the box.

Except where the speedo drive fits on the old Box the new box has a bung in there?
We removed the bung but there's no cog to drive the speedo drive.

Before we go hunting for another donor box, does anybody know how many different types of boxes were likely fitted to the KA?

Bailes.