I always preferred the later CL-1600 with different intakes
Twin DEFAs, fixed IFR probe à la Mirage F.1, Magic, Super 530s (both the old and more modern versions,...
Random idea: French F-104
Why would you want to go from the J79 to the Atar? That would be a massive backward step.
<...>The F-104 did come with a suitably obvious refuelling probe:
French-F-104 by Motschke, on Flickr
Did you plan do colour this profile ? If yes, can I ask you to do one in Mirage IIIC colours' ? The sand/brown scheme of aircraft deployed in Djibouti: