The one White shows wont clear the bumper on a 47-55. I made one that bolts into the frame rails, but then turns downwards to clear the bumper while still allowing for the underbed spare tire carrier. I made it so the center rear bumper bolt is used for added support. Its not an easy thing to do and still keep it stock. I will check out brtengineering.com tho. Very interested in how they did it.