Here's the brackets I used, simple to install and allows for all the adjustment you'll need left to right, plus the Rigid cubes can be adjusted up/down for aim.
2017 Raptor Diode Dynamics Fog Bucket Bracket Kit DD6003
A few pics here
How did you get your lights to sit flush with the bumper opening? I am using the same tracket and rigid lights and the bracket belonging to the light seems long and a fourth of the light is below the bottom of the bumper opening.