Hi Murray!

Go to http://www.mguitar.com/index.html and click on "guitar catalogue" then click on "15 Series." By the looks of things, the S-model (yes, it stands for slothead) does not come in 00 size. Martin has been introducing guitar models at a furiously fast rate however so, if the new 000-15S catches on, a 00-15S could follow.

All the best,
Dan Milner