I believe the two info box can be removed by putting the game on hard level.
I just use alt+d to remove any icons and when I lock on any target with the radar, I use the "current radar target" to identify the airplane. It works as sort of IFF.
I play Strike Fighters 2 with no icons at all because using only the radar makes it much more challenging.
I hope the developer can implement an IFF for all aircrafts by default.