StepJumper....If you can find an Alu. or Carbon chassis then you are in luck. We are in the process of designing our own and hopefully will be selling them but it is still in the design faze.
Checkout your local hobby shop and see what they have for parts. if they cant get you something then try some on-line places. I have found Tower Hobbies and EHobbies to be some really good places here in the states.
rcfreak...I agree that ultimate traxxas is a good place to go for information. I used what he showed and worked with that to come up with alot lighter chassis. We also made many changes to the set-up's that they give.
The traxxas is the most durable truck made today. that is why there are so many options to making it lighter and more raceable. I think that it will make a Basher the best truck to beat around with.
Here also are some pics of one of the three trucks we have.