Hi i am trying to find the size of the cab only not mounted on the frame of a ford c800 its a 1986 cab but i have been told its the same shape as the 1960s late 50s as the shape did not change much.I have been try to find the size for hours but no luck thanks

 

Pretty sure that the cab size grew from the 1950s to the 1980s. The basic designs were similar.