So i got my mtltek kit today and went to put the lower boxes in place for mock up and noticed i cant slide the lower re-enforcement box up into place, theres just not enough room to do so. I read the directions and it states that in 94+ stangs that you must cut/notch the edges of the opening in order to get the boxes in place. Have any of you had to do this? Im not too thrilled to be cutting into a structural part of the car that is already weak...