that wouldn't be easy, but one question to ask is simply this... how many links does #2 have? And does number two have the keywords in the domain? You know the normal SEO stuff. Maybe you could knock off #2, then take aim at #1.
In another of mine I speak of a DDOS attack on a client's website, I say that to say this... we have worked and worked to get to the front page of Google (very competitive niche) and we accomplished it. But at the same time, other sites are also vying for the same ranking, so the effort must continue.
Think about what #1 did to get there, and even more important, what are they contining to do.