4. One of the first things I did upon my return was replace the factory water pump with an Edelbrock performance water pump. Since the coolant must flow to the radiator in the back of the car, I decided on this setup for additional volume of current. If I had to do it all again, I would have figured out a way to get the radiator up front. It would have made additional room for rear storage, reduced the noise of the fans, and simplified plumbing. I'll save that for Fun Buggy II.