Hello, I have a 1984 Marlin ski boat. It has a 3.0 V-6 motor. I have An OMC outdrive. I was wondering if someone could give me a ball park $ amount on how much it would cost to replace the thermostat, replace the impeller, engine oil change, upper and lower gear case grease change and replace the fuel tank sending unit. I understand that there are alot of variables that go wiht this but just a rough amount would help.<br /> <br />Thanks.