There should only be 2 hoses to worry with, the 2 entering your core. There is an innie and an outtie, just go to Autozone or Pep Boy's and get a hose repair kit and splice the innie to the outtie and your done. Now I have a question, Why? If it is bad that is one thing but if it is good a heater core is multi functional. Not only will it keep you warm but if you have a problem with heating up down the road you can use the core as an auxillary cooling system. Sure it may get a little warm in the cab but it beats blowing your head gasket if you overheat.
