the only reason i would want a carbon upper chassis would be so i could run the dual break set up, but other wise i wouldnt get one cause it replaces the stock radio box and leaves all the electronics out in the open, what would be the reason you want one crohbober??

oh and i wouldnt get the carbon one i would just get the alloy one cause the carbon one is WAY overpriced its like $50 i think on ebay where as the alloy one is $15 i think, and there isnt that much of a weight difference less than an ounce difference i would guess