Lyle, the right front spindle should be the same as on any narrow frame (the Original is not a narrow frame) Cub Cadet, such as the 70, 71, 72, 73, 102, 122, 123, 104, 124, 105, 125, 106, 126, 107, 127 and 147. You did not specify if the wheel you are looking for is the narrow or wide (flotation) type, either size were available for the 100. The narrow rim, sized for 4.80-4.00-8 tires, was standard with the wider rim, sized for 16x6.50-8 tires, being an option.