1970 340 original fan?

I have a 1970 dart swinger with a 340 and would like to find info on the original OEM fan and shroud. When I bought the car it had a electric fan set up and the original fan and shroud where missing. How many blade and what size should the fan be and where can I find a original fan and shroud for my car? One other thing I am having a hard time finding is the original single groove pulleys. Someone tried to put the power steering pulleys on it and its a manuel steering car. Any place I can locate the OEM pulleys? Thanks for the help!