Unless you're running in the arid southwest in the middle of the summer, what's wrong with the original fan? It was good enough to work for a couple of decades on cooling systems with zero pressure, on engines that actually worked for a living, not a Cowboy Cadillac that never hauls anything heavier than an iced-down Yeti cooler to a car show!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!