you can get some internal organs for mike and victoria over at Daz but they are more anatomical models, but might be useful.

There's a zombie kid texture somewhere in the marketplace here and Daz has some stuff by Rawart which is quite good for like borg and other strange textures.

 

Gore-Dom plug in good too over at Daz that lets you add blood splatter etc, but it doesn't work with every skin shader.