Absolutely nothing beats a belt driven fan. I'd go to a great deal of effort to avoid having to use an electric, even if it meant redesigning the radiator mounts to create enough space for an original equipment type fan blade on the water pump.
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!