Ended up using lots of PB blaster, then the torch, then the fence post driver on my breaker bar to get the bolts broken. After I broke them loose the Impact gun made short work of them.
One thing that tripped me up was that in order to tighten the struts to the strut mounts you have to put an allen in the middle of the nut to hold the stud in place, then use a wrench to turn the nut.
Got the new struts assembled, connected to the strut mounts, and then back in place and bolted in. Connected the air hoses and manually ran the compressor to put some air in before dropping the car down. Meant to take more pictures but was pressed for time.
Now she is complaining of rattling in the front end when making turns.... probably couldn't hear it over the rattling in the back from the struts. Guess finding that noise will be my next project.