The deck is no problem.
They both have the same mounting bracket for the belt tensioning.
On the electric PTO it is a short length of cable with a spring on it
On the manual one it is a cable.
The 44" deck will have different sized pulleys on top of the spindles ( should be bigger ) if it is a 2 blade deck or smaller if it is a 3 blade deck.
The deck belt most likely won't fit either.