You'd have to talk with your dealer but even if you could I bet there would be quite a bit of downtime to ship them to Tokyo, have them modified, and then shipped back.
How big is your listening space? Obviously, the Latour's are awesome but you need a medium to large room where you can sit back far enough for them to work where the 604 is an ideal near to mid-field speaker.
And btw those AC-1's are utterly insane. Very impressive! And I love the craftsmanship of them.
