Wrong forum. SAS BAT is for IL2-1946
IL2 GBS is the new series (includes Battle Of Stalingrad, Battle of Moscow, Battle of Kuban, Battle of Bodenplatte, and on the horizon Battle of Normandy).
You want this forum:
https://SimHQ.com/forum/ubbthreads.php/forums/86/1/il-2-fb-aep-pfAnd, imho, having had numerous "mega" mods, BAT by far is the most all encompassing (and also the largest (HUGE) and gives you the greatest collection of aircraft, maps, fixes, tweaks, add-ins, etc.) It is what I run on iL2 1946