50019J00 Kit conversion FemsaTronic

Hello, I would like to know the exact dimensions of the bearing which is attached to the ignition conversion kit 50019J00.
It is the engine flywheel side bearing?
I modify a ds 200 engine and bearing that I see on the picture is not rolling I crank on the Femsa.
I want to be sure it matches the slot for my housing.
Are there changes to be done on the stator housing or the right size.
Thank you also tell me when this item is in stock.
Thank you for the answers.