More Notes to Self:
Confirmed...100% that 8.75 rear end out of Duke is a 3.55. How? Because it still has the tag attached to the chunk. Found it last night while confirming that both rear axles have 10" drum brakes on them. This should help when ordering parts.
Now that I'm on board with you Captain, I have an extra 741 chunk with a worn out 3.23 SG. I'm changing the B5 to 3.55's, so maybe we can work out a trade. Paul.