This a mod for the CFM56 Engine to look like a NEO Engine (only textures, no 3D).
You can add this files to any of the liverys representing an NEO Airbus.
The two files:
are not required, but contain the rotating fan texture. That texture part has to be copy/past into every *_WANNE_C.dds texture of the livery to be installed. Can be done with Paint.net and saved again as DXT3.
The files can be included by every repainter into a livery package. Free to use.