Dude I haven't been on zilvia for years. Just happened to pop on to unload a BOV. I'm out of the import/export market, but if you really want a Yashio Factory exhaust check out
WWW.JSPEC.COM
They're pretty much the only ones I would trust to get it. It's going to be special order 2-3 months regardless of what some other companies will tell you. No one is going to stock it. The upside is that you will have a pretty badass unique exhaust.
BTW, if you're building a KAT, I just posted a brand new Tial BOV up on the FS forum.