To add to jrlichina's comments, the MMM and 3PT are the same, but you must remove all of the 3PT links and arms, except for the upper main lift arms, to install the BH. This makes it a bit more of a job if you are going from the BH to a 3PT attachment. Also with the BH mounted, the 3PT lift arms, which also drive the MMM lift, will only lower slightly more than half way. At that point they hit the floor pan of the BH. This means that you can not mow with the BH attached, if you were so inclined. The good news is that the BH comes off and goes on in about 5 minutes each, so the switch is an easy one. As you might expect, the BH and FEL are fully functional with the MMM mounted.
paul