looks like a dana 44 by looking at my differintial poster
here are some pix
my uneducated guess would be that this is a 1978 or 79 HP out of a f250?
Its a ford, if you want to get more specific there should be a number stamped into one of the tubes, post that up. It may be hard to find, but its there unless its been ground off.
here are some pix
my uneducated guess would be that this is a 1978 or 79 HD HP out of a f150 or 250? since its 8 lug disc brakes?
by the way the flat top knuckles came off a chevy....