You should talk to Albert or Jeff at Speedtech and I am sure they will order the parts for you as they do have access to it if it shows in stock on Tamiyausa.com. If they don't order it for you, find out why and report back so I can yell at them
. I also know that nitro is not as popular in other places as it is in the U.S. Just tell me if you can find anything for either kit on Tamiya Japan's website. It's like the don't knowledge its existence.
Honestly a lot of people do not support the buggy and truggy due to price point. They can carry far more parts for Slashes than TRF products.
I noticed that a lot of the parts Dave Jun had developed for this kit were not showing up right on the web. That has since been fixed so make sure to check out the full list of hopup parts for:
Buggy -
http://www.tamiyausa.com/product/rcp...=desc&offset=1
Truggy -
http://www.tamiyausa.com/product/rcp...=desc&offset=1