Interesting. Looks like Taiwan is doing the mod work. Not a very lucrative venture maybe. There's just so much lobbying against outsourcing that can be done.
I think Boeing is trying to get out of being a parts manufacturer and more into "large scale system integration".
It's not just the technology: Boeing has outsourced significant work (dollars) in markets where they think they have a good shot at picking up a large number of orders (Japan, China, etc.).