During the winter of 1971–72, the Malliga 1 craft was modified in order to achieve improved performance.
Changes were made to the wingplan; the span was increased to 26 m (85 ft 10 in), with the new outer portions of the wing having both taper and dihedral.
Other changes included raising the position of the propeller and increasing its diameter to 2.75 m (9 ft), which was as much as the existing twin-boom configuration would allow for.
The nomenclature to distinguish between the two iterations of Malliga's craft was not noted by contemporary English-language articles, but has been by subsequent Austrian references.
[1][2][3] Data from Jane's all the world's aircraft 1973-74[2]General characteristics Performance