but it's a wrong assumption to think that because they're similar and have the same chipset that the BIOS would be compatible. Even within different revs of the same board (ABIT KT7A for instance) you need different BIOS (rev 1.3 is different from 1.0 - 1.2). Your trick would not work.
The biggest clue is the fact that it's twice the size. Gotta be different, otherwise why would they have done that?
<i>It's always the one thing you never suspected.</i>