How to rebuild a 8 3/4 Borg Warner Posi Unit

While Rob's comments are accurate, you can make it work decently. Kudos for trying, you may get lucky, or you may not, but at least you are taking a shot.
I once had someone tell me that I HAD to use a torque wrench on a set of heads. They were absolutely right, but I didn't anyway, and it worked out fine.

I love Truro, absolutely beautiful country.