A/C and Cooling System

[TheDeal526]

1997 Pontiac Grand AM 3.1L V6
108,000 miles

I recently had my a/c system and cooling system serviced at Aamco. The a/c compressor and cooling fan were replaced. I noticed that on a hot humid day like today the a/c system cools the inside of my car very well when the car is moving, but when at idle, the air coming out the vents feels cool, but not cold. I did a little research and found that this car can have 1 of 2 different cooling fans installed in it. The one Aamco installed is a single fan, but I've seen a dual fan (DORMAN Part # 620618) on www.rockauto.com that supposedly fits my car as well. I was just wondering can that dual fan actually fit in this grand am? It looks like it would be a little tight on the right side with the hoses taking up a lot of space and all. And if this dual fan can fit in my grand am, would it be worth it switch to this fan, and would it help the a/c when the car is idle?

THANKS AGAIN ALL.