Update: The water pump leaks. Resevoir was empty, and when I poured a jug of water in, she leaked like a sieve when driving. Not out of the rad or the hoses, either, but out of the side of the engine where the pump resides. I can't see exactly, but it has to be the water pump, right?
What's more, on the Chrysler 3.0L V6, the pump runs off the timing belt. The whole thing has to be taken apart, new timing belt (might as well), new pump, and about 5.5 to 6 hours labour. I've received quotes of $650 from Crappy, $600 from Master Mechanic and $800 from the Chrysler dealership (all before taxes). CT took a while before the service techs agreed on the course of action for the engine. The dealership had to discuss amongst themselves for a while as well. MM knew the situation right away when I told them the engine. All agreed that a new timing belt was in order, since the whole thing was apart anyways.
From what I've read on the web, just to get at the situation, the engine has to be lifted from it's mounts and supported from underneath.
I've read that people have done this repair themselves with some tools and a Haynes manual, but that it takes them all day, and I'm not convinced I'm up to the job. I'd like to do some of my own repairs (brakes, oil changes, etc.), but this one sounds over my head. Can anyone confirm?