Aren't A-Body 8 3/4" axles supposed to be in demand?

Depends on where you live in the US!! Where I live in S. Texas there are almost no Mopars and No A body 8 3/4 rear ends..........none, zip ...........zero, nada!!! If you happen to find one it's like a million dollars and 500 miles away.
However there are Chevy 12 bolt rear ends falling from the sky for cheap!!! Treblig