When I install my 402 in place of my 350, I was thinking of installing double electric fans instead of stock fan. This brought up the following questions: 1 - Do I place the electric fans directly on the radiator, eliminating the stock shroud? (I think so.) 2 - SInce I am not using the stock fan, do I still need the clutch fan? 3 - What does the clutch fan actually do? Thanks to all who attempt to educate me!!