We recently made a mount for the GNSS antennae to fit the Matrice 600 Pro better than the gopro mount. It uses the standard M600 A3 mount, with a piece we printed in house. It uses the same 3 screws from the bottom of the antennae, so the only additional pieces you need are the print and the folding arm.
That’s awesome @AreDub. Can we put a link to the 3d printer file in case anyone else finds this useful?