Sorry man I sold the truck and didn't ever get around to doing a lot of research on parts availability. I do know that it shares some parts with the "burns" 1/8 buggy. Might try ebay??
Hi I have the same USA 1 truck that you have and Im looking for a cluster gear (steel and plastic gear that rides on the clutch bell) Do you know where I might be able to find one? I got deleted and warned when I posted this on your add for your truck. Thanks