Also, seems like in the pics, some had the lay down steering servo and others had the upright servo, I realize the lay down lowers the center of gravity, therefore making it easier to drive and jump, but does the upright work well??? If I gett the one with the upright can I buy a different plate to make a lay down? What are the biggest differences in the Hyper 7 and the Hyper 8, besides the carbon fiber pieces?