The Spacemaster was an Australia only name first used on the 1953 Phase II Vanguard with the extended tail. The wheelbase remained the same as the earlier Phase I. The only real difference from the British Phase II and 'our' Spacemaster was the kangaroo bonnet ornament. Red car is the Phase I, b&w British Phase II and the cream car our Phase II. The green car is a regrilled Phase I... It looks like Imperia also used the Phase II as a base for their cabrios.