F-20A Top Speed

I may be wrong, but it appears as though the F-20A’s rip speed has been copy-pasted from the F-5E? I am unsure if the rip speed is modeled on the basis of structural limits of the fuselage itself or the F404’s permissible engine operating envelope with the intake profile it has, but nevertheless, I cannot break M 1.75 without ripping at 11-12 km MSL. Please correct me if I’m wrong, but shouldn’t the F-20 be limited to somewhere in the ballpark of M 2.0 at altitude?

Cheers, and happy flying!