My neighbor asked me this, and i have no clue, since i have never even seen an ECX in person, let alone messed with one. Basically, i am trying to find out what needs to be done to run a Torment or Ruckus on 3S. Will it hold up on that much power? I know it has plastic axles, so, would they need to be replaced, or will they work? Will loosening the slipper be enough, or does it need to be upgraded? I know the diff needs to be upgraded to the metal one, at least, that is what my research a year or so ago said. What else would need to be done to it? His plan is to use the same 3S electronics my Losi 22S has (Dynamite Fuze ESC and 3300KV Dynamite motor), or something similar. I told him just look for a 22S that is already brushless, then found out they are discontinued, which surprised me.