915_Tahoe
Your GM Parts Specialist
you are correct, it is a 10 bold design, was looking at the illistration and it counts 14 bolts12 Bolt? I thought they quit using those in '91?
There are two 14 bolt rears, a 9.5" semi-floater and the full floating 11.5" used in the 3/4-ton trucks. The semi-floater is used in the 1/2-tons under certain circumstances.
https://yourcovers.com/differential_covers.html