Updates are in... New front suspension mount. No more clunk.
Unfortunately for me, I ran into "GDPO syndrome" (God Damned Previous Owner) as this is what I found the moment I tried to crack the strut lock nut loose

Yes that is a (ground down) weld. I had to cut the shock shaft in half (with a hack saw!) to get the spring and strut/hub assembly.
Bummer is, this was a semi-new shock that was ruined and had to be replaced all because of this shit to replace the bearing.
I didn't see anyone else talk about this so here is how I made a tool to hold the strut shaft while loosening/torquing down the center nut.
8mm 1/4" drive socket, 1/4" drive extension through 1/2" drive 3/4" spark plug socket. The spark plug socket was surprisingly hard to come by, but they are found at ACE hardware/True Value for about $10. The rubber insert on the spark plug socket is nice for holding the assembly together as well.
Just get a big ass crescent wrench (I like to call them "nut strippers")or if you have a better tool set than I, 19mm combo wrench.

Important: do
NOT use the 8mm as something to help turn the larger nut. You WILL brake the socket. I found this out at the junkyard. When disassembling the unit you should be able to crack the large 19mm nut loose with just a torque wrench, you'll only need to hold the shaft when spinning the unit free or getting it mostly tight.
BTW, this nut should be get a torque of 47lbs-ft if you can get it. I'd also recheck the nut a few times after driving it, as it locks the whole assembly, probably 1 of the single most important nuts on the entire car.
Anyone got any tips on spring compressors and taking the spring on and off?
I spent hours trying to get my spring re-compressed so I could install the top mount. I still have the passenger side wheel to do.
*keywords: Strut shaft nut locknut lock shaft tool shafttool locktool tool