I am installing the Heidts Mustang II kit into my 65 coupe and I'm running into a little problem when measuring the notch for the frame rail. Maybe some of you guys that have done this kit before can help me out. The boxing plate is hitting the sway bar mount and will not center on the 24 1/4 mark. Do I need to cut the sway bar mount a little to make the boxing plate fit, or am I measuring wrong? Here are a few pictures.