Gold Banshee and Ghost
Just inject the dds files in the appropriate places stated on the file name. If you want the super glossy finish like in the picture, then you need to swap the meta data of the pistol_cubemap with the cubemap_banshee.

experiment with swapping different cubemaps, if you find a decent result then post a pic.

Here's what it looks like with the visor cube:

Have fun.