Actually I've been looking into this, I think I'll go the junkyard route. Look for an old Taurus or Lincoln Mark VIII electric fan. Most sell for about $30, then get a good fan controller for about $50, must cheaper than buying one and the Mark VIII fan pulls about 5000 cfm. They also sell em on Ebay but they gouge you on shipping but still cheaper than buying a new one.
Whaddya mean I dont pay my bills?? Whydya think I'm broke!!
03 Lariat Crew 4x4 Line-x bedliner, Truxedo Lo-Pro QT Tonneau.
RIP [97 XL 4.2L V6]