Originally Posted by Racecrafter

The TB03 comes with short suspension arms already. (from the 416)

I suggest looking into some narrower suspension blocks if you want to decrease track width.

http://www.tamiyausa.com/articles/fe...article-id=412

I'm not a suspension block guru, but looking at the Tamiya charts in the above link. It apears that their "F" blocks are the narrowest. This I would think would require the 42mm drive shafts however.