JH,
The Toyota 4 runner steering box is from a '79 to '84 model. I could e-mail you an article from a 1994 magazine that describes the installation on a Fxxd pickup, but according to the fellow who sent Jenny and I the article, the procedure is the same for a Chevy or GMC. You need to be able to open MS Word to read it.
Also, we are interested in your disc brake conversion in the tech articles section. But what is a Toyota "hardbody"? I kind of remember the name from their advertising...