The artist impression is the same as in Jean Cunys "Les Avions De Combat Francais" Tome I,
just mirrored. illustrating the Matra R.100/110, so Tophe is absolutely right. The R.100 was to have
been powered by a sinlgle Hispano Suiza 24Z, the R.110 by two RR Griffon, maybe the elongated
booms would have been on the 110 only, but actually I couldn't find a clue. Maybe it was just
a modification during the design, perhaps to allow for more fuel, as in the de Havilland SeaVixen FAW.2