Great mod - but will it work?!

Hi all, sorry this is my first post but hopefully something productive will come of this.. but first goda call in a bit tech support.

Iv got two macbooks (one white one black) both with working screens but only one with working board but neither of them keyboard/trackpad works... My plan would be to take out the working logic board, build a case, use a external keyboard & mouse BUT weld up a frame to fit both LCD screens (duel screened) to the one unit. I know this can be achieved with a mini dv to VGA and two external monitors but wonder if you could adapt the lcd cables?

Any thoughts anyone?