If you are ever looking for textures to model polish rolling stock, here are 52 sites of textures:
https://eu07.pl/forum/index.php/topic,7953.0.html
Apart from polish textures, you can find some other ones, like:
Czech RegioJet
http://eu07.pl/userfiles/18599…A-RJ_618118-91002_Ampz.7z
Traxx 187 Wiener Lokalbahnen:
http://eu07.pl/userfiles/18599/foto-WLC_187_324-9.7z
Traxx serii 185Beacon Rail Leasing
http://eu07.pl/userfiles/18599/foto-BRLL_185_602.7z