[cbergeron]

Have you and your team even considered inverting that design laterally?
I'm a bit late on this thread, so I apologize if this has been answered before... The air fluidity from the front clearly showed a LOT of turbulence in the sidewall midsection. If you inverted your design, you'd reduce that drag to a fraction of what it is.
Granted, you'd increase turbulence at the rear, but I would think that it would be a much smaller at that point.