Best answer I can give is most of them will.
I just moved a 72 MMM from my 4400 to my 4310 and swapped the front blower from the 4310 to the 4400. The blower swap all parts swapped perfectly. On the MMM everything matched up except one rear lift bracket where JD moved the bolt location on the trans housing slightly. New bracket cost me about 290 dollars. After that part everything went together perfectly