Product review (3 stars): Watch out for the mismatch on the bracket
This kit does the job, but it may require some metal work to use.
Evidently there are three or four different size slots on the various duet and sport duet dryers.
This kit did not fit as the dryer slot was not as wide as the bracket that holds the dryer onto the  washer. I had to widen the slot by using a Dremel and a routing bit. It only took about ten minutes, but it would have taken a lot more effort with another method like a file.

Another warning, you will need at least two strong individuals to lift the dryer unto the washer, a third person to direct the positioning was helpful also.