gtx 1060 alienware x52 r2 upgrade question

I was wondering if there was a variant of the gtx 1060 that I could buy off amazon that would work for my computer. In my research people seemed to recommend a blower system but on amazon the only ones I could find were like the asus variant which is 10.5 inches long which I believe is too big. And I could not find the founders edition which would fit on amazon. I need to get the card off amazon because of gift cards I got any help would be appreciated.

specs: intel i5-4430 cpu @ 3.00GHz

Hard Drive western digital 1tb

gtx 660

memory: 16gb

alienware x51 r2