You can find all the Item armors in BIFs-->Templates-->blueprint,item. the clothing is all labled g_a_classxxxx except the one you buy at yavin thos are g1_a_classxxxx. you can open the item editor by double clicking the file.
when it's open on the general tab look at the boxes body Variation and texture variation.
body variation= the model in appeance.2da.
2=b base clothes
9=i jedi robes
10=j revens/starforge robes
texture variation= the number on the actual texture.
so if I grab a texture at random PFBG05
P=PC,Player or something like that
05=g_a_class8005 which equals = Calo Nord's Battle Armor.
hope thats what you wanted to know.