Is modding injustice possible?

Need help with injustice skin mods. I've used gildors forum and got my modded 2dtextures from pc mods. I'm stuck trying to pack them back into the .xxx file. The xbox images are tiled (swizzled) . Using a ddsinjector that works fine with pc files but cant pack the xenon version. After a couple hours it will say injected file but crashes the game. Any modders know about the xpacker usage on xbox files? This program looks to have all the needed features , mainly used in WWF modding forums. Any help please

No response. Ok, I've tried using the mk9.ddsinjectorv1.4 , the file it injects is about 4 times larger and when I try to unpack this new file it fails in many parts of extracting..?