The presentation of this deep upgrade as "new fighter" was a PR stunt. Its the same Azarakhsh/Saeghe project of reverse engineering the F-5, but they have now reached a level of indigenous component production that it can be called "fully homemade". Its not the original F-5 anymore, the whole avionics has been modernized. - Grifo radar copy with GMTI and SAR mode - INS/GPS + TACAN navigation suite - Modern HUD + MFDs with digital map - ...