71 Dart Camber Issues

Another vote for tracking the problem, but it depends on what you're doing with the car and its history.

Investigation should proceed something like this:
Car on ground, check wheel bearings by trying to move the top of the wheel in and out.
Lift one wheel off the ground by jacking under the lower control arm. This keeps both ball joints loaded. It also holds the other wheel so it doen't move. Check for movement in and out from top and bottom as side to side for steering.
Look to see which joints are moving. ( A second person helps but its possible to do alone).
Then repeat with by jacking from the frame so you can check ball joints and lower control am bushings. This is easiest to do on a lift if you have access to one. A pry bar helps.

Camber is not going to be related to steering. It is going to be most related to control arms, especially upper control arm bushings and lower control arm bushing. Next balljoints. Bad strut rod bushing most noticible effect will be on braking (fore/aft movement).

Sometimes the upper control arm adjusters get worn too. So if replacing those bushings, be prepared for possibly replacing the adjusters.