1972 Plymouth Duster Alignment failure

We want pix of everything, not just what has been replaced. If the bushings were not replaced, then I would start there.

Are you saying that the alignment is good and then goes off when driven by you or just by the mechanics trying to align this car? How can they say it is aligned if they have not driven it, and if they have driven it, how come it does nto go out of alignment for them?

Either way, something that should be anchored/stable is probably moving around; bushings worn, cracked metal support in one of several places, loose steering box, etc.