Re: 14-bolt FF Rebuild??
I swapped in a 14bolt FF in my k10 and I thought the same thing you did, let's replace all the seals and bearing and everything. I couldn't find a book or even a decent manual that showed where all the seals were. I ended up not replacing any bearing, just repacking the outer ones. I looked at the wheel bearing seals (that's what Autozone called 'em, they are the seals on the wheel hub that prevent the wheel bearing grease from getting out or water from getting in) and I replaced one that I had messed up while taking the hub off, but the other one was fine. That's all I did, plus change the gear oil and used a lsd additive since the diff is limited-slip.
If there is something else to be done, I'm not sure what it is. Runs great. BTW, I threw away those heavy drum brakes and put TSM's disc brake conversion kit on. Worth the money.