Product review (5 stars): Easy upgrade for an aging washer.
This upgrade kit installed about as easily as I could hope on my old MAH4000AWQ.  This was much cheaper than a new washer at least in the short term, and I was able to avoid sending something to the scrap yard.

Using the included instruction sheet (French and English version included), I would say I had it done in under an hour except for messing with the door which leaked after I was done, but that was my fault.  Don't tighten the top screw completely first when you hang the door.  Lesson learned!  The service manual tells you about this.  Search for 16010061.pdf if you don't have it.

Other people hinted at some problem using the instructions.  I found no ambiguity in the instructions.  It is possible that they had issues with one of the many other versions which can sue this motor.  If there was one tricky part, it was that the old AC120V input to the motor control board has to pass thru an adapter jumper because the connector on the board is a different type.