The usual; fuel pump, carburetor, master cylinder &
other small items. Nothing out of the ordinary.
This 1957 Olds Super 88 was my first car. Even though I owned it 40 years ago, I still remember it vividly. I paid $600 for it in the summer of 1961, and in the 5 years that I owned it, I had very few unexpected expenses with it.
You sure you haven't forgotten something in the meantime since you've had the car? I mean, it has been nearly half a century, LOL!