Few changes greeted Sixty Special for 1947, as an all-new design was coming in 1948.
The car was presented as an all-new design.
The SP2 was an all-new design introduced in 1979.
As the Model A was the first all-new design in 19 years, many features were upgraded.
Lincoln pinned hopes for 1958 on yet another all-new design.
The program focused on developing a large number of new technologies for the theoretical future engine, not necessarily creating an all-new design.
Due to these circumstances, model 1937 guns were replaced with the all-new design, the more powerful model 1942.
An all-new design, it was developed in the late 1980s to compete with the similar Boeing 7J7.
Replaced in 1997 by an all-new design carrying the same name.
These cars lasted through the 1955 and 1956 model years before being replaced by the all-new 1957 design.