Thanks for the input. I currently have a Champion 4 row (they said was good to 800hp) but it just doesn't cool. I purchased the radiator, shroud and 2 electric fans as a package deal and it has never kept my car cool. In desperation, I began trying different combinations. I took the shroud off and at least now it cools while I'm motivating but at lights the temp begins to climb. I live in south Texas and need efficiency.