I have another question if you wouldn't mind. You mentioned replacing the pipes with heater hose. So I finally got the leaky pipe out, and it turns out that it bolts directly onto the engine, ( it is part number 16268 off the exploded cooling system diagram. It's the diagram that has " HOSE-WATER BYPASS #3" at the top.)

I'm hoping Toyota still has some parts available (too late tonight, I'll call them tomorrow.) If not I guess I'll have to replace the pipe with heater hose. My question is how would I get heater pipe to join to the engine? I don't imagine there is a fitting that matches the engine end and then couples to a hose?? Have you done this before, or do you have any ideas. Your thoughts would be greatly appreciated.