Does this interfere with any othe mod?

[SykoTiNe]

Just want to be sure so I don't have to reinstall M2TW.

[Csatádi]

If the other mods you played didn't copy files in the main Data folder except the .sd files which are a must, you don't need to worry.

[TheGeat]

If the other mods you played didn't copy files in the main Data folder except the .sd files which are a must, you don't need to worry.

Is it compatible with Stainless Steel?

[Csatádi]

Depends on the file structure of SS.
Magyar Mod places .sd files in the main Data folder. These may cause confusions and vice versa if SS does the same.