Those USSR build ACs always had the same stenceling when dilivered.
As i know about LSK aircrafts, during their time those stencils and markings were mixed up
in the maintenance so that those stencils were partwise russian and partwise in german.
So i guess having them standartwise in russian (kyril) would be the best way.
I guess as a good reference, maybe you should look for some 1/32 sheets, or highrez temps from Lomac (DSC) for the SU-25...
Here is something I came also across:
http://www.arcforums.com/forums/air/index.php?showtopic=272025
http://www.findmodelkit.com/sites/default/files/rvd_48013_decal_set_stencils_for_mig-23.jpg
http://images.auctionhelper.com/images/10343//Hungarian%20Aero%20Decals/HAD48110A.jpg
http://images.auctionhelper.com/images/10343//Hungarian%20Aero%20Decals/HAD48110C.jpg