Depending on the car i dontt hink i would go electric. At least not if its a street car that see's alot of daily use. I just swapped back from a 16" electric to a 18" flex fan and it made a HUGE difference. My car barely gets past where the thermostat opens. But i know for my car (82 GT) i just got a 1 inch fan spacer for it and that works great.
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