No japanese hardware fits our requirement. We either have equivalent systems and superior systems or we are working on them. The Japanese aren't going to export us anything worthwhile though. Maybe they will participate in future navy procurements.
It's Combat Management Systems, it's optronics, weapons and ew systems are in some cases co-owned and in other fully owned by US based companies. Soryu or any Japanese SSK will never happen. They will not be able to fullfill the ToT. Even the very basic terms.