I read that only 3 Fouga’s were delivered to Katanga.
2 Did not survive and 3rd survived and was left at Kolwezi.
That one is presumably absorbed in the Congo Air Force.
Are you looking for the 2 which did not survive?
You are aware of two pictures on Flickr
of 1 abandoned Katanga Fouga?
I see no place nor aircraft ID but other photos on that Flickr page might help on place?