The aircraft is just a platform. Even a Boeing passenger plane could be modified to support it.
The radar is the main thing.
Probably so but don't forget that to be effective this aircraft needs an absolutely jam-proof, spoof-proof and intercept-proof communication system both air to ground and air to air. In addition it needs a ground-based command and control system to coordinate the activities on the battlefield including targeting and threat assessment. It's more than just an aircraft, it's a system.
I agree w/you on that point. How can our “Allies” give out advanced electronic hardware and the associated software for the computing systems to a place like that? We’re just asking for trouble. Of course, if we (US Armed Forces)have all the particulars of that system, we can spoof it or better yet, make it un-usable in a wartime environment.