Mmmm love the mix of polished aluminium & the shiney carbon! Your design/arrangement for fitting the LiPo cells is very neat, also I assume your running pro-diffs from the BossCat?
Despite their bling looks - i'd be inclined to swap those roller driveshafts out for sliders original plastic sliders, they weren't 'that' much of an advantage from what I could remember but they seem to be quite rare & desirable, it would be a shame to break one of them