Thank you all for the very helpful comments and illustrations. I was able to source some originals from West Coast Classic Cougars. I also purchased the set off NPT so I have the square pads as well.
This forum is awesome. I have been doing a rolling restoration on my car for 8 years now trying to make my car as original and complete as I possibly can. It is amazing to me that after 8 years I am still learning new fine details. It just makes me wonder what else I have missed?
Corey