It wasn't finished, but it definitely wasn't 2Pac'ed. They had quite a bit of material to work with (specifically from the sessions for the album) and they rounded it off with some choice guest rappers and producers. To give you an idea of how careful they were with making sure the album was faithful to Pimp C's musical vision, a DJ Premier version of one of the songs was left on the cutting room floor.
It's a very good album.