Best time spent here would be to take a video of everything moving up front and post it up. That lets us see what's moving, if you have any caster, etc.
Measure the toe with a tape measure at the front and back of the tires. Take a pry bar to the ball joints to look for play. How old are the front axle U-joints? When they start to freeze up they can make the steering feel really jerky.
Measure the toe with a tape measure at the front and back of the tires. Take a pry bar to the ball joints to look for play. How old are the front axle U-joints? When they start to freeze up they can make the steering feel really jerky.