There is fella in my area that has one that is very similar to your car. Different color rims. He tried telling me that the car was a Cabriolet. I didn't argue, but I know better than that.
From what I have read/watched some say you don't need to bother. Another guy I watched this morning had examples of broken starters and a ford service bulletin from 1955. He was adamant that they be a 12 volt starter.