Follow the link , its a fan set up on my sub. I have heard that Taurus fans ,which are a single fan, will pull around 3300-3500 CFM. The dual fans I have set up cool real quick, they have never seemed to runlonger then a minute. Probably can save a few bucks but I worked with top quality wire and connectors.

http://www.fullsizechevy.com/forums/...d.php?t=309284