I have some coolant leaking from my car. It's not coming from the water pump (although I wasn't sure at first so I replaced that as the accessory belt was making some noise and I thought it might have had a bad bearing), nor is it coming from the easily visible coolant hoses at the front of the car. It seems to be leaking from somewhere near the firewall of the car, so I was guessing it might be the coolant hoses going to the heater core. Anyone know of a good write-up of replacing those or at least know how hard it would be to replace those?