I did manage to get a little progress today, however, so things are still technically moving forward.
The last one caused more trouble because the square weld nut inside broke free. The floors are in much worse condition than I initially thought. The whole rear section starting about halfway under the front seats to the rear where the battery sits is rusted through and there's not much holding it all together. I'm kind of surprised I haven't put my foot through the floor.
On one hand: restoring the pan wouldn't be that big of a job but it would be time-consuming (time is a commodity that I'm currently short on due to my workload). It'd be hard to restore the pan and not slip into a full blown restoration - which would defeat the purpose of trying to get the car running/driving and enjoy it for a while before starting the restoration.
On the other hand: I probably should find a stopping point and just drive the car for a while. That's hard to do knowing that I could just pull it apart and get the restoration going...start using the parts I've been collecting for years. I'd really like to pull the pan and get that fixed up but it's such a slippery slope...might be a 'game day' decision.
At minimum, the rear subframe will be completely restored. I guess I should be okay with that and move forward but I can't help but realize that I'll wind up doing this all twice (now and later).
Evening edit: I was able to get quite a bit done today - these cars come apart rather fast- it's getting them back together that's hard.
I also bought new rotors for the rear from CIP1 while they had the CSP rotors on sale with free shipping. I'll see those in a couple of weeks - I'm in no hurry since this won't go back together for about a month.
The fluid that came out of the transmission was fairly clean and amounted to about 2 quarts.