I am having trouble finding the cooling hose that goes from the heat exchanger to the water ciculating pump(anti freeze side of sys.). The eninge is a 5.7 l mercruiser with a 4 barrel carb, closed water colling sytem with a sea strainer and raw water pump. (The data tag is missing from the block so I don't know the serial #) as far as I can tell it a 1996 engine. I have tried quite a few places to no avail. Any help would be appreciated.