Is it not possible to put this type of sensory technology into a new build Viper/Eagle/Hornet, etc? Our 4th gen fighters are far more affordable than the F-22/35. Against 3rd world nations/insurgent arms, these aircraft are more than capable, are they not?

Admittedly, it might not be as ideal for conflicts with China or Russia, etc.

I just can't help in being disappointed at how long it takes us now to put a new manned combat aircraft into service and at how much it ends up costing to build it compared to previous generations.