I just purchased a 1992 Lancer 1569 Bass Boat that has a 48 hp SPL Johnson motor on it, and I am trying to determine how old the motor is and if it is a good motor or do I need to get something else. The seller had no idea how old it is. The model number is J48ESLENB and Serial # is G03093699. The motor starts up and seems to run good although I have not had a chance to launch the boat yet and give it a good try. Thanks