So, I pulled the leaky radiator and all the hoses today as well as the thermostat and expansion tank. Lo and behold the nipple on the bottom of the expansion tank is busted (thermostat was stuck open as well but I expected that).
I'm headed to the pick and pull yard to look for a good condition replacement. From what I can tell from the parts catalog the following all fit, but I am hoping there might also be others?
1991-1995 940 turbo and na both
1991-1996 960 turbo and na both
1997-1998 S90 and V90
Are there others that will work? Any 740 tanks maybe? These models above are rare in our wreck yards.
Here's the busted tank I pulled from my 940:

Oh and just for good measure, here's the thermostat stuck open (it was 55f. outside when I took this pic)
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