Oh lord, gloom and doom. Be positive this might only be an AOS. I replaced my IMS on a 2000 'S' (waste of time it was double row...though very pleasurable project), changed my water pump (more waste of time the one in my car was like new after 57k miles), and replaced my AOS though I have no idea what condition it was in, can't see inside it
. Ya would think the cars are piling up at dealers falling a part. My buddies at both dealers here say they are great little cars and yes they have commented that water pumps do wear out, but so do a lot of older cars.
Keep us posted OP, we hope the best for your car. Fix it and continue to love it.