66 Dart GT is Wandering

"ALL" new parts?
Ball Joints upper and lower
control arm bushings upper and lower
tie rod ends inner and outer
pitman arm and idler arm
strut rod bushings
sway bar links or bushings

Not that all these need to be replaced but that is a fairly complete list.
On later models it is common for the sleeves that the lower control arm shafts mount into to break loose in the K member.
Also the wheel bearings are something to keep tabs on...