Replacement factory or O.E. cooling fan?

If you have the shroud and cant find a factory fan you can use a stainless flex fan,6 blade from flexalite or other. Make sure the fan is into the shroud by at least an inch or so(different spacer lengths). This fan worked well for me for years 67 cuda fb 440 4-speed. Watch it though its sharp and can be hard on fingers. I have first hand experience with this.