If this truly is a 1998 drawing, the author did his research, as this is exactly what Saab was projecting around the early 1950s. Not to mention the choice of words used are also period correct (sort of).
Saab was projecting that future interceptor needed rocket armament, preferrably integrated into the aerodnyamic body or wing via tubes, 75 mm in caliber for guaranteed one-hit-kill probability against strategic bombers. Folding fin rockets were in development at the time and it was suspected they could be turned into guided missiles in the near future. The missile scope seen is also period correct for Saabs early missile guidance systems without radar. Rocket engines were also experimented with, etc, etc.