Would it be possible?

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http://forum.xda-developers.com – My screen is cracked. And a friend wants to sell me his galaxy s3 (perfect screen but bricked) for cheap. Would it be possible to simply take the motherboard from my phone, and put it in the other phone? Or would me having a custom rom and recovery, mess up with other parts of the phone? I wouldn't think so, since all the main chips seem to be on the motherboard. But I just wanted to get the opinion of someone who probably has more knowledge of this stuff than me. Sent from a galaxy far far away. (HowTos)