mox

If it’s of any help, I was able to purchase the fitting from Jon Myer a few years ago, he may still have them. Mine is a 63 so the fitting was on the fuel pump return.

There are 5 per wheel cover.

I had the same problem when I had to have my starter rebuilt. I had to drop the exhaust pipe from the manifold to have enough room to drop the starter. If I recall correctly original Studebaker exhaust pipes had a flat spot near the starter which allowed just enough room to slide the starter by it.