Hey guys,<br />yesterday, I went to my local marine mechanic and asked for a water pump for my '63 75 hp johnny and he tried to sell me an impeller only. I asked him about getting the whole water pump kit and he said that that would not be necessary. The only thing that I needed to change was the impeller. Is this correct. I haven't done any dealings with this guy so I don't know if he is a straight shooter. Your advise would be greatly appreciated.<br /> 