Why not?
The answer is no. Electric, pin-out and some more things incompatible. There is nothing like an "adapter" except a complete - not yet known or build - sub-board, where the 2630 would only feature as a mechanical base. In the end you might as well make a complete new 040 accelerator board. Search ebay. ;-)
EDIT: Yes, you're right, the GBA featured this kind of "adaption" - but in the end it's more or less a complete own accelerator...
