RV-2 Oil Pump Check Valve

Does anyone have a RV2 apart that has a check valve? Can you take a photo of the hole? My understanding is later RV2's don't have the check valve and are not machined for it. I have a rebuilt one that I am re-rebuilding and it does not have a check valve. It has a Mopar casting for the housing but it has a oil pump plate with 2 bolts instead of the normal 4 on my other cars so I am thinking maybe this does not need it.
That said if I do need it does anyone have an old RV2 that has the rubber check ball and spring I could buy?

Thanks,
Jim

Found the answer. If the housing does not have a check valve it does not even have the hole machined out at all. Here is one with the check valve. That hole is not even there if it does not.

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