The 1955 truck Shop Manual supplement states that everything in early 1955 is the same as in 1954, unless otherwise shown in the Supplement. Only the 1/2 ton rear-end parts are shown in the Supplement.
Also, the 1954 Truck Data Book (June 1953) shows the same cab ID/serial-number tag/hp/GVW as shown in the 1955-1st book (October 1954). Of course, the color of the tag cannot be discerned from the two-tone original printings.
