What rear end in a 1961 chrysler? Any value?

About to commit to a rolling chassis with a complete rear end that was borrowed from a 61 chrysler 300, for the sake of being a roller....is this pre 8.75? I have no pics of the rear end yet...donor chrysler was a 361 bb car...
Could this be an early 8.75? Any value either way?

Thanks guys. I know this is for A bodies but I'm sure someone knows the early mopars!