Wheel wobble at 9 & 3 - suggestions?

[speedyspaghetti]

Hey guys -

I've been tracking down an annoying steering wheel shake for a while and I think I have finally pinpointed it to my driver's side front wheel. When I have the wheel off the ground and the lug nuts securely on, I can grab it at the 9 and 3 position and get some pretty significant play with a "thunk" on either side. What is this most likely to be? The following parts have been replaced recently (less than 100 miles):

Inner tie rods
Outer tie rods
Struts
Strut mounts
Strut bearings
Droplinks

Is it more likely to be the track arm or the control arm? I can't really seem to see where the "thunk" is coming from.