No cutting required. The bar itself has a pronged lower that fits between the mesh of the grill. If I can remember correctly, the bolts that hold the metal bumper to the frame come out and you place the brackets concentric with the holes of the bumper and frame.
This.
Did you ever end up sorting this out?
I did indeed. What I stated was true.
Here are a few I took a few weeks ago when I took off the light bar.
Here is the pronged piece of the light bar that comes through the lower grill and mounts to the brackets:
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Here are two more of how it mounts to the frame.
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