Here is a picture. My shackle is back really far, because I have air bags on my truck. The air is all let you, so the 1 leaf spring I have is all the way straightened out, and axle up into the c-notch. When it is raised, it does come closer to that brace. Hope this helps.
Probably didn't have to notch that much, but I did it with the bed off. I would trim half that and check clearance. If you need more, trim as needed.
