The center post on my cab is sandwiched between the cowl and the dash panels on the bottom and spot welded on the inside of the windshield frame at the top. I suppose there were different methods at different factories. The FAM shows the center bar on the windshield only on RH drive cabs which must have still had 2-piece windshields in 53 (date of most FAM sheets), and welded to the inside of the pinch weld at both top and bottom.
