it seems unlikely that, given the number of 'deals' that various countries (not least the Israelis..) have done with Argentina over the years that have subsequently foundered, the Israelis have not ensured that the money does infact exist..
the Kfir airframe certainly is AAR capable, whether these particular examples are is another question - interesting of course that in another current purchace, the Argentine AF is buying a pair of KC-130's. its possible its a coincidence of course, and it may well come to pass that these aircraft won't be delivered with AAR, but i'm not sure i'd put much cash on it.