I have a very old 3/4 hp pump and a Hayward S200 sand filter on my 18x36 in ground vinyl lined pool(approximately 27000gallons). There is one intake about 18’ from the pool to the pump (above waterline), and then two outlets. All are 1 1/2” pvc. There is no heater, water feature or any other attachments other than a salt cell. My pump motor is starting to go and needs to be replaced. I want to replace the pump, but don’t have a clue what to get. HELP!