what cfm do i need

[jd4242]

here is the part number for the hhr if you still wanna try it,don't forget to vote after trying it and 4x4ing.
gm3115200

 

[93xplorersport]

I got a 91 Taurus sho 3.0 fan today and it only has 2 wires on it. I thought these fans are 2 speed fans? Did I get the wrong fan it looks like the Taurus fan that I've seen pictures of, I hope I didn't get the wrong fan. All I need now is some wire a relay temp sensor and a over ride button. If this is indeed a 2 speed how should I wire it since I don't have ac?