I'm swapping out the flex fan and small auxiliary electric fan for the Mark VIII/Thunderbird 18in electric fan. At the same time I was thinking about the water pump. I have a Bosch replacement water pump right now that has done a good job for the past 5 years keeping the motor cool without any problems. My only thought here is does an electric water pump really free up that much power, if any? What is the most inexpensive electric pump out there? (probably chinese )