Did a search for this, zillion unrelated hits. Closest I found, in this thread:
http://www.subsim.com/radioroom/showthread.php?t=109854
The link that's supposed to lead to the tools has a number of mods instead.
Specifically I'm looking for a .zon editor, already have a standard hex editor. Is there an all in one package for modding SH 4?
Off topic, does this place have a file library? I'm finding a lot of broken and outdated links, phishing sites, and "YOUR COMPUTER MAY HAVE SPYWARE, DOWNLOAD OUR FREE ANTI SPYWARE TOOL NOW" garbage.