74 Dart camber....coupla questions

Welcome to the site.
The eccentric bolts on the UCAs Are for camber adjustments, but if you lift the front of the car up to do it, you have to roll it around some and bounce on the bumper to get the suspension to settle, if you don’t, it’ll look worse than when you started.
If it feels squirrelly, it could be you have too much toe out (fronts of the tires pointing away from each other). That’s adjusted with the tie rods. For street driving, I like to set it 1/16” toed in (fronts of the front tires 1/16” closer to each other than the rears of the front tires). Bad LCA bushings can also cause some crazy problems.
Good luck