Model 01 Appearance & Design Changes Begin

Of the many running changes to the Model 01 during its lifetime, most were first seen in the 1964 models. Some were just appearance changes, but others were engineerings, such as an air-operated parking brake and new air intakes for the engine. Most appearance features remained the same from 1965 through 1968 except that the front of the silver siding and lightning bolt trim that was raised to the window level in 1965 and stayed there until the 1975 models arrived. 1963 models were built with taller roofs than the others but this was for only that one year.