I went the cheap route and got a Pep Boys heavy duty radiator and an Auto Zone electric fan to compliment my Stewart high flow water pump. I got the biggest fan Auto Zone had and this setup is working great. The fan only cost me $65 I believe plus the $30 for the Flex Lite thermostat. With an aluminum radiator I think it could easily handle a 400+ HP setup.
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Gunning for 12's!
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