Hy Seamus Chevy, you have a 1 1/2 ton truck, (eight sided screw in front hub cap). In Canada that would have an 11 series designation, interestingly in later years that size of truck had the designation of 4400 series, 4400 is part of your serial number. Did you take a picture of the serial number plate yet? Canada produced a lot of vehicles for the military that went to Australia.
