I would sugeest investing in a NEW water pump ...





They raise the mechanical fan level 5 and 1/2 inches so you can run a mechanical belt driven fan ...



The raised water pump also has a neat alternator bracket cast into it ... with the raised water pump ... you can run a 18 inch 6 blade fan.
With a belt driven fan, you do not have to worry about remembering to turn the electric fan ... and cooking the engine ... if you forget ...