From what I’ve seen, the textures are strictly M4. You can apply them to an M5 figure (or V5) since you can change the UV-mapping of the figure to M4 in the “Shading” tab. But there’s no easy way to add bullet holes to an M5 texture.
The textures can be applied to any genesis character, male or female, and they all turn out wonderfully gruesome (except Toon Amy. The hole in her over-sized head is much larger than the ones in her spindly arms). If you plan on doing PG-rated renders, where all the objectionable bits are covered, then you’re good to go. If you need an R-rated render, you can import the “Nipple” material zone from another texture and change the diffuse color to match the mottled color of the Good as Dead 2 texture. If you want something that’s a little more NC-17, then you’re asking the wrong forum…
Alright, alright. If you really want that, try Henrika’s “Carcinoma” texture at Renderotica. Apply it, add the specific, um…effects that interest you, and adjust the diffuse color to a something purplish. Enough to make a grown man cry…