Help: 72 Dart Swinger front pass. fender rubbing

I would have someone outside the car watch the tire as you go from forward, brake, then reverse and brake to see if you have movement fore and aft. Had this situation with a 70 Duster. The K member was cracked where the lower control arm bolts through. Idiot before me put it together and never tightened the LCA to spec and cracked out the k . Try this first just to see if you have movement. Check both sides. Good luck!