Jerry ,if you have a 50" or 44" (round on left side) the mule drive pulleys are angled since the center deck drive pulley is not in the center of the deck hanger like the older 38 42 or 48" decks.
If you run a tiller you will need an older 42 48" mule drive with streight pulleys
If you run a tiller you will need an older 42 48" mule drive with streight pulleys