That's the desirable one from the granada sized lincoln. It even has a real 9" center section - the earlier big car ones were the 9 3/8" ring gear carriers. It even has the hard to find calipers.
I have one in my 31 it is a nice piece. The calipers are still available both left and right. Only thing is you have to use the hand brake often to keep it in adjustment.
Lol...thx Slim..Funny,yesterday,I commented on the rolling chassis I was selling and decided to keep and the ad magically disappeared. I like when that happens.lol.cheers.