[Hib Halverson]

My guess is it would be difficult to install a aux. pushing fan on the front of the cooling stack. You wouldn't want to put in between the hvac and the oil cooler or between the oil cooler and the radiator because it would likely restrict flow more than it would enhance it.

Know that fans which push are less efficient than fans that pull

If you need better cooling my advice would be:
1) Go to a higher-capacity radiator
2) Seal any holes which allow air flow to bypass the radiator
3) Make sure the OE cooing fans are working properly.
4) Revise the fan-on strategy in the cal
5) Make sure the interior of the cooling stack is free of debris
6) Make sure the front air dam is intact.
7) Go to a 170 or 180° thermostat
8) If possible depending on ambient, decrease antifreeze percentage and add either DEI Radiator Relief or Red Line Water Wetter to the coolant.