I would think any JDM importer could get that for you. Try googling or maybe try 370ztune (bulletproof) here..
Or my local shop (Fizz Autosports in Chicago Burbs) could get it for you I'm sure. Look them up or PM me for their contact info.
Edit:
http://370ztune.com/product.html?m=t...turtle&id=1282