Far out Mat mate, just took some uneducated time to study Harrop's video properly. That 2300cc bolt on jobbie apparently transformed a stock drive in 230kW / 454 Nm beast into a 353kW / 638Nm Hub Monster :-) According to my late night iphone calculator that's a whopping 50%+ extra Wasps & 40% + extra Oomph!! You gotta save up for that mod mate, absolute ripper :-)