Just tossing-in that impacts don't change alignment without altering some part. May not be enough for some kid..on his phone.. at a dealership's shop to see, but it's there...somewhere. Like doug says, 99.9% of the time it's the knuckle's arm but it can be a tie rod, A-arm or its mounting point to the frame. Once in a great while its a spindle but that's rare.