I'm now pretty sure what the F-111B inflight refueling probe installation looked like, both originally and as planned for the production aircraft.
Thanks to Ray Geminski, we now have a photo of the short-nose probe extended:
The probe for the original short-nose design was located just aft of the bulkhead that the radar was mounted on. It swung up from the left side of the fuselage.
And then swiveled forward into position like the A-6 Intruder's.
In this picture, you can see what look like two of the three doors associated with the probe. My guess is that the lower door was hinged on its forward edge. The middle door was attached to the probe (see the picture above). The upper door was hinged on its right side and covered the opening at the base of the probe.
Although the probe was not installed on the first two or three flight test aircraft, it was on the fourth for certain because an inflight refueling evaluation was planned on what would be its last flight. I believe the picture of the unpainted F-111B and the one with the probe extended are both #5.
The extension of the nose for production allowing a more straightforward installation. The probe was now stowed on top of the nose under two doors and rotated up into position without having to swivel.
http://thanlont.blogspot.com/2009/03/f-111b-carrier-trials.html) In any event, the airplane had more than enough internal fuel for the typical flight-test mission so inflight refueling was not required.