to toughen up the kraton I suggest either the GKA or Hot Racing Chassis braces, the GKA or Voltage hobbies servo mount, an aluminum center differential mount, and Shim the differentials. Then it's always nice to have extra parts around. Ebay is your friend in this as there are a couple guys who buy new Cars and sell the parts. Cheaper than buying them new for sure. I now have a set of Front and rear arms, 2 extra gear boxes, 2 extra differentials, a set of turnbuckles and the ends with the balls in them, and a sterring/servo saver assembly. You can also buy an extra set of shocks, or just fine the shock rods, and shock rod ends. those tend to be the piece that bends or breaks most often.