Well i think it's impossible to be 1:1 you don't have some major elements on your low poly ... like spikes in the wheels and some other things on the engin ... make the whole details from the left picture in low poly to your model. After that you could Zbrush your model or Mudbox it ... then make normal map on high quality and i think it just might work ...
It's just a prediction i did not try this method but on theory it should do the work