Is It Posi? (8 3/4)

Thanks for the response's, however my issue is this is a diff. that my Dad has, it came out of a 73 340 Cuda (i would have thought that it would have been posi), currently he doesn't have the luxury of spinning the axles since the third member is out of the housing, is there any visual that you all know of that would be an easy id.

Thanks again,
TIBBY