the project you mention could be a competitor to the RAGEL program. RAGEL mean "Reconnaissance, Attaque, Guerre Electronique Lointaine".
According to Henry Matthew, the Mirage G4 (later G8) was one of the competitor to this program. and this Sud Aviation project looks strinkingly similar to a G4...
Just like the TALP or DAFNE, RAGEL is a program, not an aircraft!!!
and we know that the TALP and DAFNE competitions opposed various projects from nord, Sud and Breguet...
Dassault stayed alone for the first time for the ACF starting in 1972. Before that, Breguet, Nord and Sud (the latter being public firms) still competed aginst the firm...