A couple of things have changed since the car was built. Yes one is the tires and the other is the roads. High crowned roads were common and aren't anymore (depending somewhat on where you lived). Because of the crowning, and maybe to somewhat account for driver weight, the right, left specs for caster and camber were different.

Radial tires have more sidewall give than bias or even cross bias tires. They tend to like a little more negative camber for cornering.
For your car, without doing further mods, you can have them:
1. use the most negative camber setting
2. Get the most positive caster setting.
- use the specs for a Power steering car even if you have manual steering unless you find the steering wheel to difficult to turn.
- They must recheck the camber and caster setting. Most guys today do not have the cheat sheets or experience in doing these dual cam adjusters to avoid changing the camber when setting caster.
3. Set toe to factory. If your tires a larger diameter than factory than use a degree setting or at least the max toe in inches.

Before starting the alignment, the ride height must be within spec.