the title is pretty self explanatory i think. i want to use 2 different mesh mods for the ebony mail, but the file names are the same - cuirass_0.nif and cuirass_1.nif. this of course makes it difficult to place them in the same folder in the data files. is it even possible to run these at the same time, and if so how?

thanks

This is where the order is important. You need to pick which one you'd rather have the bulk of the changes from and that one is installed after the other one so it overwrites those files.

meshes aren't like esps - they get overwritten as a whole, not in part.

If you want to use both, you'd need to rename one set of meshes and then create a new armor entry (also new smithing and tempering entries) in an ESP to use the new file name.