Id just take old part if u have it and have a local machine shop make you 1... A man and a set of caliper and a drill press with a lathe cutting bit can do some great things.
Id pick the rustler hands down.. If you swap boken parts out to aluminum one all one is doing is transferring the designed weak points to the next part inline weather its in board or out.. the esc is by far more fragile than the traxxas..breaking a rc constantly is either the driver hitting...