There are differences between the body, fenders and top for a car made in 1921 and 1924/25 models. The engine as a unit would fit any year from 1908 to 1927. Not unusual to have an engine swapped out. Cars made between 1917 and into 1923 are known as low radiator cars, ones made from late 1923 (1924 model) into 1925 are known as high radiator cars. Without being able to see your car, can't say what you have.