So, up to now, if I read correctly, you have done the steering rack, tie rods (innner AND outer?) and sway bar links. Up next is ball joints, struts, sway bar bushings (I hope you did those when you had everything else apart), and then onto the lower control arm bushings, half-shafts, brake components and wheel bearings. If you really want a different perspective, have someone drive the car slowly over a couple pieces of firewood or small logs with you outside so you can hear the clunk from a different perspective. You might find it's one side or the other and that would help isolate.