AMR,
Like Kieth said, you may want to look at the height if the draw pins when it is resting on the ground.  When you have a chance, lift your 3pt all the way up and measure it.  I think it gets about 22" or so off the ground.  Then take a measuring tape to the dealer and measure the height of the draw pins on the tiller.  I would say that if they are 16" off the ground or so , you should be OK.  If you live on flat land, and only need to be able to lift it a few inches off the ground, you should be OK.