Help, my wife drove the care today w/o coolant. the waterpump started leaking while on the road. She called me on the cell phone and said No heat and the car is making a funny noise. I said check the gauges. Temp was in the red. Blown head gasket at least. Oil in the coolant, etc, etc. What are the chances that it's only the head or am I looking at comitting suicide here? How often do these aluminum heads actually crack, or are we just looking at warpage. 156k miles, a little oil consumption. Also what's up with the water pump on this beast. It looks like a major job to get the critter off the engine. Any help here would be appreciated as it looks like I'm booked to do the top end tear down. Thanks