i'm betting the 54 rear end retired a bit earlier then you wanted it to.
Technically, a 54 is considered a "Functional Design Era" 1954-1956.
The "Power Giant Era" was from 1957 to 1960
And the 1961-1971 were the "Sweptline Era"
The earlier 1948-1953 were the "Pilot-House Era".
And the 1939-1947 were the "Job Rated Era".
The 1936-1938 were called the "Fore-Point Era".
The 1933-1935 were called the "Glamour Era".
Interestingly enough, the 1901-1932 were just "Dodge Trucks".

Just in case you didn't know, The Dodge brothers were parts suppliers for the 1900 auto industry. They supplied motors and transmissions for many of the car companies during that time. They also invested in the startup of the Ford Motor Company and supplied the new Ford Company with motors and transmissions. They were very wealthy men at the time. The Dodge Brothers Motor company developed because of a feud with Ford. Gene