I recently bought my first boat it is a 17 foot crestliner with a 105 hp chrysler motor i was wondering if someone could help me out i dont know the year of the motor and i need to order a impeller and a thermostat for it the model # is 10576 and the serial # is 1050 if anyone could help me that would be great i do have some mechanical skills and was wondering how hard it is going to be to change them thx