Also, noticed that the Dreamlifter doesn't have winglets -anyone know why?
Winglets are only cost effective on long range flights (over seven hours). On shorter range flights the extra weight negates the fuel savings. If you look at photos of the short range 747-400's operated by JAL and ANA (747-400 Domestic) you will see that they don't have winglets. As the Dreamlifter is only operated on sectors of under seven hours it doesn't need winglets.