Oil pump shaft (intermediate shaft?) play/noise

I believe the early V8s all "fit", but there were 3 diff length of shafts.
Perhaps it has the wrong distributor .

Here is an adapter to use any late model small block mopar (318,340 etc.) distributor in early Mopar hemi motors. These fit chrysler, desoto, etc. All of the mopars use the same size distributor base circle, what changes is the length of the shaft drive that connects the distributor to the intermediate shaft that runs the oil pump.

early mopar hemi distributor adapter 331,354,392 • $36.15