Broken Shocks and 8 3/4 with 489 case in a Slant 6?

Shocks look OLD. By 1972 they were looking to use up a lot of the A-body 8-3/4 rears, BUT I also saw a '70 Valiant four door in a wrecking yard a number of years ago that was a slant with K-H discs, handling package, and 8-3/4. Looked to be a fleet car of some sort. I seem to recall a three-speed manual, too.