Well, tried a few things tonight. First I tried removing the endlinks and tying the sway bar up.
I also found that the subframe bolts aren't centered in the bushings. And, on top of that, they certainly were NOT tightened to the 115 N-m they were supposed to be tightened to. Regardless, the clunking doesn't seem to be much better after tightening them to the proper spec.
Note the shift.