Whether or not two fans would suffice is a good question and an issue we have debated ad nauseum locally. We did not try 2 fans with the rad/con combo. I type to slow to list the pros and cons we surfaced of both approaches.
This car has a dynod 600hp 427 Keith Craft motor that we figured it would generate a lot of heat energy. Suffice it to say, the cooling performance met our expectations, and we are mimicing the design on a second Pantera at this moment.
30 years of Pantera ownership experience has led me anecdotally down this path. In low speed summer traffic, one can't have too much air being pushed through the rad/com. Above 35mph when you have adequate flow, obstructions are less significant; above 50mph, obstructions are insignificant. I've played around a bit with the Pantera's cooling system. A few items we've learned are available in a cooling white paper at the Space City Pantera's website.
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