I have just bought a 1972 evinrude 6hp. I am wanting to change the water pump.. Could someone help me in finding the best kit to buy for it? I am new to the boat world.. And also I have read different post about the exhaust hole. Some people call it a tell-tale hole and some call it exhaust hole.. Which one is it really? And also should water come out of the hole in a steady stream to make sure it is cooling the motor? Thanks