Edit - June 21 2011: i thought of a way to make this a lot smaller, as small as 1.5 inches thick, only im a little lazy right now and i have other priorities at the moment. Perhaps i'll do it later at some point in the not so near future. Friend's account is vSterNv
It took me about 1 year to do the background research on how to build it. It took me about 3 months to actually build it. The screen, back triggers, and wall/headphones ports are from the PS1, and everything else is from an N64 put into a box. It's fully functional and is my first model. Other information is in the video.
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Special thanks to benheck.com and You need to login to view this link