I wouldn't get your hopes up. I'm pretty certain that even if you did "Re-marry" the Motherboard with the DVD drive, it would still flash 1 red light. Due to the motherboard not liking the different model of DVD drive.
Its a guess. I don't know anyone who has attempted this but feel free to try. If you do get it working though, MS might block your console from XBL for tampering with it.
I don't know anyone who has attempted this, and I'm pretty certain it would be on a news site that its been done.
But yeah, feel free to try it