From past experience, all Traxxas chassis are prone to breaking, so to save money replacing them, I bought a Fastlane Machines aluminum Stampede chassis (which is what the Slash chassis is based off of anyway) and just bolted on the transmission, a-arms, ect. The only problem I found with this conversion was with the side nerf bars - the Traxxas ones don't fit/work. I solved this problem by getting some nerf bars from a Losi Strike and after a little dremel work, they fit perfectly. Now my truck is basically bulletproof.

And BTW - Fastlane Machines also makes an aluminum replacement chassis for the Slash too.