Front end wobble.

Well I got under there and nothing. The car was on the garage floor and I squeezed under there with plenty of light. Everything I touched was solid with no play. I then jacked up the car under the lower control arms on both sides. There is a baby clunk when the wheel is wiggled from the top and bottom. Almost to the point of not being able to hear the clunk at all. I did the pry bar under wheel to see if there was any independent movement in the suspension and got nothing. Now with the steering wheel locked and wiggling the wheel side to side (9 o'clock and 3 o'clock position), there was some play. I don't know if that type of play is supposed to be there? Best I can tell is that the upper control arms need new bushings and new ball joints. The upper boots are ripped and contaminants are getting in there. The bushings on the upper control arms look dried out as well. The lower control arm bushing looks fine and moves as one with the rest of the suspension. Can I replace the upper control arms independently or must it be done in conjunction with the lower control arm? If I have lower control arms from 73 should I get oem UCAs from 73 or can I go with tubular UCAs? I think I have gotten to the point where I just need to replace stuff to chase the problem away.