Nothing wrong with the flex fan, if you don't have enough room for a clutch fan. My brother has had one on his car for years and street drives it and races every weekend and it cools good and has not flown apart. I have had both electric and mechanical fans on cars over the years. Electric fans are nice, but more complicated and need a good electrical system to support them. My wife was driving my car to work on time and the electric fan died= major overheat. After that I went back to stock shroud and fan setup. Really are you going to notice a few hp loss to turn it on a street car.