Information on full stealth version of KF21 with internal weapon bays called KF21-EX starts to emerge.
If true, this will go head-to-head with TAI's Kaan.
Isn't that KAAN belongs in the F-22 category (heavy-weight 5th-gen) whereas the KF-21 belongs in the F-35 category (medium-weight 5th-gen)? The engines used by them are of different thrust classes.