This is my first skin mod, so some feed back will be appreciated on how to improve the quality 
if I decide to make an update. This skin is meant to go with my Zim Tank sound mod.

Place the folder in the following directory:

steam > steamapps > common > left 4 dead 

You will also need to edit the pak01_dir.vpk 

First, make a back up of the pak01_dir, for when you want an easy way to go back 
to default tank skin incase it messes up.

Using *Notepad++, go to Search, click find and look for hulk. The line you are looking for is:


(line 18673)$baseTexture "models\infected\hulk/Hulk_01"

Change line 18673 to:
$baseTexture "models\infected\hulk/Hulk_02"

And you are done.

Enjoy!
-Yaminakai

*Note: Notepad++ is free to download, just google it and download if you don't already have it.