Gpu fan for Haf X

Hi I just ordered and and now waiting for my Haf x. I had actually budgeted myself for the 932, but went with the Haf X mainly because of its unique GPU cooling capabilities, as I have 480 sli. I previously had a Raidmax Smilidon(I know) and I predict a massive difference in temps under load. I kind of asked this question earlier but I just wanted to make sure as the Haf should be in any day-can I use one of the 120mm fans from my smilodon to put in the GPU air duct? I understand they are probably low quality, and over time I will likely get new fans throughout, but will they work and cool my cards adequately? I'm excited about the new case cuz man stuff is cramped atm and I love the cable management in the HAF. This is a link to the Smilodon so you can see the fans http://www.newegg.com/Product/Product.aspx?Item=N82E168.... I won't get the case for a couple of days so I got time thanks