Welcome. It was nice talking to you on the phone the other day. You picked up a nice car. You'd have liked Jack, the previous owner. He was a great guy who will be dearly missed. I'm glad that his Mustang is with a good guy. Jack would approve.
The guys on this site (except me) are very knowledgeable. I'm sure someone can guide you to the correct parts you need. Best to You.
BTW, You may want to post in the Parts Wanted section as well.