Looks like I chevy Corp 10-bolt front axle, 3/4" Ton, '78+ as it looks like 8-lug from what I can see. Same if it was a 6-lug.
Not sure on the t-case, NP205 maybe? Haven't had a ton of experience with them so I'm not sure, but I know there (use'd) to be a lot of guys one here that would know or sure. It would be a likely match with the front