Can anyone identify this rear end for me?
I bought a 89 1 ton parts truck ( gasser)for some body n interior parts. I planned on keeping the rear end as a backup just in case one of my Dana 70's gave out. I assumed this truck had a Dana rear. The diff cover looks similar enough but the housing looks totally different from my 70's.

 

Forgot to add it's a single rear wheel. Thanks for the help