I am doubtfull that ben would do somthing like this
Not only has he covered it here: http://benheck.com/n64-portable
And many of the things you need to know are here: http://www.amazon.com/exec/obidos/ASIN/0764578065/theofficia017-20
But there are also many sites deticated to doing exactly what you ask. Here:http://forums.modretro.com/viewtopic.php?f=33&t=791
I don't build N64 portables for several very good reasons:
1) They are really easy to break, I know because when I built one it took 3 systems!
2) The DS is already basically a portable N64
3) The crappiest Android phone has better graphics and more modern hardware.
I accidentally rated this and can’t find a way to remove it, sorry.