No modifications were required to install the 3ABN on the Sadoun DG-380 motor, it did require the 42mm motor tube (50 mm comes standard with the motor). Working great so far.
My 3ABN dish was one of the earlier models and it would not fit on the SG2100 motor. I had to modify it. I had take the bracket that mounted to the pole off and I had to bolt the part that mounted to dish directly to the motor shaft. The elevation was way off from what it was supposed to be but I got it tracking th arch good.