A little question about Israeli Mirages

[cafe]

I posted yesterday some Israeli Mirages IIIC, including some re-engined ones. My question is about those and their keel since the pics I have aren't really clear on that part of the aircraft.

Did the Mirage IIIC re-engined with the Atar 9C of the Mirage IIIE/5/Nesher keep its original keel or got the one from the Mirage IIIE/5/Nesher? Or only a few got the new keel (the ones used for recce)?

I based my choice (new keel for all re-engined Shahaks) on profiles and model pics but they can have mistakes (like showing showing the rocket engine when Israel never got that option).

pro : some Mirage IIIB from the french Flight Test Center used the keel of the IIIE/BE.

con: all of the pics I have of argentine IIIC show the old keel and those were re-engined ex-israeli Shahaks. I doubt they would had added them back before the sale to Argentina.