i haven't seen the new Go GXR's run in real life but being in sydney i'm lucky enough to have a Massive Mods Team Driver at my track as well as 3 other guys running the MG66 and i can vouch for the fact that there a beast of an engine whether its buggy or truggy!!!!
i've driven a MG66 in a Losi 2.0T and it was ballistic how hard they thing pushed the truggy. when the boys opened them up above 80% at the Proline on the weekend they seriously kicked ass!!!
Mike