I drive my 69 B body a lot, I don't think it's too far off from newer standards. At least for daily driving. Admittedly the steering coupler and pitman are getting loose.

I did rebuild the front end with urethane bushings and the offset upper bushings to get camber to negative. 5 and caster to 2.5.

Im looking to do better tires, shocks and sway bars. Im plenty happy with the original springs

Unless you're building a track car, I don't think you need much more than that.