The 84 Gitane Pro with the Columbus SL frame tubing had been my "Moby Dick" bike for many years now, and I still have not found one to add to my stable. Most that come up for sale out there are either the wrong size or beat to hell and rusty, never mind the high asking prices.
In the meantime, I will be content with my modded up, "Tout French" 84 Gitane TDF instead.......
...............But, if a nice 84 Gitane Pro framesef ever comes up for me to buy anytime soon, I suspect I would not hesitate to still get it and build it up with the Stronglight/Simplex/Spidel Group, I already have ready for it.