I watched him post it way back when. Its been referenced here by me and others on several occasions, so yes a number here have seen it before. I believe you have to join to see it. If you read it carefully you'll see I'm part of the dialog.
This time I'didn't reread it in detail. A member here has done a similar swap and better documented the pieces he used.
The only real problem with Leroy's setup is that its for dual wheel type hubs. This thread was started as an effort to bring together single-wheel information because so few appear to have done it.
If you truck has dual wheels that thread and John Henry's (not his alias) here are good reading. If you've got a single wheel truck there does not seem to be a lot of information on how to do it.
Grigg is working on it for his project. I decided to go IFS on mine.