There are two hoses behind the block, they are listed as the heater outlet and heater inlet. Autozone has them if you do a search for heater hose.
You should be able to reach around behind the block and see if they are soft. Sometimes oil gets on them and weakens them up. If you have a bad water pump it can allow steam into the lines, that helps break the older hoses. I would plan on putting a new timing belt and water pump in it just in case.