Hi there- I have been after this one as well ,and kawa zz-rr moto gp bike.It is still been made and will only be for sale in Japan.
Rod from http://www.raggeddesigns.com/ was going to Japan for a show and was loking at bringing some back with him+ a few other bikes.
Not 2 sure on what outcome was or has been.
There are a couplr of other guys on this forum that might be able to shed some light