I've compiled a parts list of what I need:
It includes the new housing, a gasket kit (includes gasket, bolts, and pressure switch), the hose running across the front of the engine, and the hose running from the pump to the engine block with the t-fitting for the auto trans cooler.
I'll be doing this, along with a coolant flush, system cleaning, and refill. For coolant mixture, I'm thinking of doing a 70/30 water/antifreeze mix with Water Wetter. I'll also do my oil change (I hit 170k miles today!), Castrol 0w-40 Euro Blend, and a Mann filter.