I use one on my car, it's quiet as the regular stock one. I picked it up at a swap meet and replaced the clutch with a new unit. I also use a shroud and that car stays cool!! It's a 9 to 1, 318 with a Comp cam..HM 260. It fit well but is a little close to the radiator. As far as HP, the car does run well but is no 13 second car. I built for the street.
