Use the bracket from the factory.
Sirius is now hooked up, and it works great on the NZ509.
Didn't have time for the camera so that's my last piece of the puzzle, and the one I'm most curious about.
Guess I'll "see" in the near future.
BTW, if you are interested in using your phone with your head unit this model may not be a good fit. From what I can tell it uses a generic adapter that's a little larger than the sat antenna, and it's not attractive. Someone with more knowledge of those things might have more info... I wasn't interested in that.