GC II/5 converted to P-47 in April 1944, Rozanoff left the unit in May 1943.
For more data see the website
http://perso.wanadoo.fr/frenchaces/m+gc.html
It's French but should be understandable.
Click on "Unités" on the top, then click on "GC 2/5 Lafayette" on the right menu (the middle menu is for 39-40 units, the right one for 42-45 units).