I found that the fit was not to my liking. It took heat and persuasion to make it fit snug around the existing core. As you can see by the last pic, it is really just supported on the sides by the original core, and only goes up the front of the frame rail about 1/4 of the way. If I were doing it over, I would get a support that ties both frame rails from underneath and ditch the original support. When I called USCT to inquire, they advised that they could see no problem.
BTW......Pretty happy with the fender braces as well.