We're booked economy class on Emirates flight EK238 out of Boston for Dubai. It's a B777-300ER. Does anyone know what version this aircraft is? Is it a 2 class configuration (economy and business) or is it a 3 class configuration (economy, business, first)? On SeatGuru it states that the 2 class has 34 inch seat pitch in economy while the 3 class has 32 inch pitch in economy. A big difference for a 12 hour flight.