I am truely amazed at the temperatures that you are all seeing. But, I have yet to see the highway, at rushhour, in the scortching heat. Hell, it's not even 80 here yet. :beer:
I would suggest a fan on the right side. In fact I would go so far as to suggest a computer fan on the right side. They are small, lightweight and move a good amount of air. I would wire in a manual switch controled but keep it controlled by the other fan. In the heat of the summer, turn the switch on, and when the temps drop back to liveable, turn it off.
I hear that 6th gen rads are bigger, but you are looking at a big expense there as well as some possible machine work. Just move the air past the heat exchangers faster. :goofy: