Rubber hoses work just fine, you can get one from any parts store. If you want to dress it up you can get braides steel kits to put over them fairly cheap. Braided steel should also help reduce the expansion due to heat and pressure in the hose and give it a better life... hopefully
Either way you need a specific radiator hose for the upper and lower hoses to handle the pressure being put through them.
Firefly: Mal: You don't know me, son, so let me put this to you plainly: If I ever kill you, you'll be awake. You'll be facing me. And you'll be armed.
