Kangaroota - suggest you google VickersViscount.net for info on the differences between the 700 and 800 series. As a boy travelling on the aircraft type frequently i noticed that the 700 series had oval shaped doors and the 800 series had rectangular doors. Other than that the models differed in fuselage length, improvements in the power delivered by the Rolls Royce darts and seating capacity. The Ansett V832 had the largest seating capacity.