Whats This Z-bar And Bell Housing Pivot For?

the z bar looks like an a body... same one as in my 340 duster cause it has that extra hole in the plate. im pretty sure a 6/small block/big block all had same z bars but different mounting plates on the bellhousing

and for the lake wood housing i wouldn't see why not as long as the z bar isn't in there at a bad angle or binding