Yes,
You will need that part, and you will also need the correct starter. I'm assuming you still have the original bell housing? The starter and the flywheel must match. The 6 volt and 12 volt starters take different flywheels.
Kurt
Yes, It looks like the original bell housing, it has to holes on each side to screw in the foot starter linkage. I have a 6 volt system so I will need to check the flywheel and starter, or do I need to just replace the part that goes on top of the starter?