You are correct Harry. By going to the web site I referenced and right clicking the heading "Holden Cars History" you get the history of the Holden and it clearly states that production didn't start until 1951. The 1948 pictured, as it is on another site, was apparently a prototype and differed by the lack of the parking lights. The 1948 FX,1953 FJ,1958 FC etc. seem to indicate the model. If a person takes a minute and reads the history they will learn that, written under the year 1948 the model's engineering prefix 48-215 is named FX so that you could tell it from it's successor. I believe that Joe's question "I wonder if that is the name of that body style or generation of truck, kinda like Jeep does with their vehicles (XJ, MJ, ZJ, WJ, TJ, JK, ect.)" is answered by the information on this web site. As far as a 1948 Holden FX ute, I believe I have offered my interpretation of that also.