I am a newbie here, so any help is greatly appreciated. I am trying to help my father-in-law find a water pump for a motor he has acquired.The motor is a Sears Model # 57459761, SN # 68601411-1154. He says it's a 14.1 HP. I have searched the Sears web site and found nothing there, hope someone can help here. Many thanks in advance for any help.