Well whaddayaknow...
Jubei Ninpucho - Ryuhougyoku hen (Ninja Scroll)
Doesn't seem to have subtitles, and a bit on the expensive side, but it does seem to come with both Japanese and English audio though making it somewhat import friendly. Can't really tell if the audio will be lossless, to little information, but nice to know this classic is finally on its way. Could an American release from Manga be far behind now?