Unfortunately you hit the nail on the head, I miss those days. All the old stuff is gone. Its probably been almost 10yrs ago, a buddy of mine needed a plain jane stamped small block chevy valve cover so he tried all the local yards. Not a single one, all LS engines even then. He just wanted one to cut the top off of to make a splash dam to lash the valves on his 73' Vette.
Used to be all kinds of neat old stuff at the salvage but you have to go to a specialty yard for that stuff now and those are few & far.