Some 60s trucks had the AO9 "laminated glass" option, til at least 1964 that I know of. I'm not sure why, but I have owned two 64s out of the same St. Louis plant only a few serial #s apart-one had tempered(no frame), one had laminated(framed)glass. Yes, the window run is a different thickness between the two. Brian


My \'64\'s in the Gallery
Pictures in my Photobucket
1964 C10 Custom Cab 350/700R4
1964 Suburban 350/700R4
1979 Ford F350 4x4 400/c6