It appears, from the picture, that the bridge routing was also enlarged, but offset from center. That will require removal of the inserts, Dowling of the holes, re-drilling of new holes, and new inserts. If you put an AXY pickup in the bridge position, it will leave a gap on one side. Looks like a fun project. Personally, I would add the Alembic electronics back into the bass and add a q switch.
Have fun!