Assuming the K341 came from a Quietline,
have you looked at and compared the two wire diagrams in the Tech section?
https://www.onlycubcadets.net/forum/showthread.php?t=22
Right off the get-go ignition switches are different, then you can rewire from there.
Shrouding and muffler are different on Quietlines, what's you plan there?
That might interfere with manual PTO, but I'm guessing.