I marked it and used a drill stepper bit to go one step bigger. The Dremel wasn't really working as good.
Then I did a camo cut on the knuckle side about about a 1/2 inch wide. Basically leaving an opening to slide the hard line and soft line out without undoing the hard and soft line.
I also had to bend the backing plate brake line holder tab to make it in the same plane as the hard line fitting. Roughly parallel to the ground. originally it was closer to 45 degrees.
This works because the C clip prevents the soft line fitting from falling through the hole. Without the C clip it wouldn’t work. The reason for the hole is the LROR bracket is to thick and the U clip groove will not be visible/usable.
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Don't know how to rotate this picture. Still need to button everything up.
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