This is a joke, right?
I've never heard of that what you are speaking of being done.
There was a guy a long while back, 10 yrs or so ago, added a aux mower deck to the deck of the mower he was using and was trying to promote the idea...hmmm.
However, if there is anyone here that would be more capable of doing such an operation on a mower deck than you, fish or resto, based on reading your informational posts, I'd be surprised.
The flow control baffles are a consideration. You'd want a smooth transition to discharge clippings. High lift blades take the clippings up, the flow control baffles help to mulch and transition the clippings out to discharge, at least thats what I think.
I'd think you'd have problems where the deck, hinge and the cut piece wouldn't flow the air properly as it wouldn't seal.
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