70 Dart Suspension

It’s just as likely to be the wheels and tires as it is the suspension. With the proper backspace the tires shouldn’t rub even if the suspension is worn out.

What size wheels and tires are on the car? Do you know the backspace?

It may be that the suspension is worn out. It may be that the suspension is worn out and the wheels and tires aren’t located right for the car either. And if that’s the case, just buying new suspension parts may not fix the problem.