Diamond T was always noted for mid-size trucks, not just big highway tractors. In the days when they had their own cabs, they had a very distinctive and stylish full fendered conventional truck, with a low roof. It was favoured by soft drink, beer and meat delivery companies. When it became outmoded, Diamond T got new cabs from International. (Or from the same supplier as International. FWD got cabs there too as did several others such as Canada Diesel.)
Diamond T never had a tilt cab of their own, and their post war cab-forward model was too dated, and lacked the convenience of the tilt feature, introduced (in mass production) by the White 3000. In 1953 Diamond T began to use the "Fort Wayne" tilt cab, in order to maintain market share in that area.