I find that the links on that tech section page seem to be broken. or example, on:
http://4x4wire.com/toyota/tech/
- Convert a Forward-Shift Transfer Case to Top-Shift

points to:
http://4x4wire.com/topshifter/
yet nothing found at that URL:

The working link is:
http://www.4x4wire.com/toyota/tech/topshifter/

I've tried a few others with similar results.