I haven't done the swap yet, but I may be able to help someone soon.
I have a set of GBR-built TruTrac F&R third members with Bill's heavy-duty 4.75/reverse cut gears, etc. that I will probably soon be putting up for sale. They have about 8k miles on them, little of which was actually offroad.
I used to run 35.5"+ tires on my 97, and they were ideal for the size, but with the 33-34"ish ones I now normally run on the truck, I've purchased another set of GBR TruTracs with 4.11s that I've been meaning to install. At some point soon I will, and that will free this set up for someone who wants to go big tires but without complicated lockers/diffs. I've been really happy with the character of the TruTracs.
If someone was actually pushing me to get it done because they wanted to buy my 4.75 third set, it might give me the push to stop procrastinating.