i installed the sagnaw box on my 53. with the longer bar welded to the top of the frame. it looks good the company i bought my kit from sold me the instsall kit drag link and pitman arm it is all made to work together all the geometry is correct.but double check the mesurments in the directions mine would have set the box 1.5 inches off and nothing lined up and the drag link was to short if installed using the directions. if you want i can post some pics of my install for you


gotta love old trucks