Ring gear & carrier are out of '64 Corvette. This early style posi is not as desirable as the Eaton (ED 32297) which replaced it.
Often, inside the carrier, one or more corners of the two alloy divider plates (spring locators) will have broken off, not allowing one of the long posi preload springs to seat. If such is the case, the carrier is basically good for parts. Been through this before
