Converting Mercury 4hp to 6hp (four Stroke)

[riny]

Hi,

I live in Sweden and have just bought a 2013 Mercury 4hp (four stroke) which is imported from the U.S. It's on its way with the mail so I have not gotten it yet. I became curious when friend of mine told me about a possible upgrade by replacing the carburetor and get 6hp.

Is this possible? If, what parts do I need to buy?

Thanks