I did more research and I'm going to stick with a mechanical pump. I'm looking into the Victor, A little pricey but all good reviews. Anyone have any input? Also , I'm thinking about taking the electric fan off the outside of the radiator. I mounted it for a backup if in traffic etc. but it seems like it runs 5 to 10 degrees warmer. Do they really block that much air flow? Also , Flex fan or keep my clutch fan? Thank you for your help!