In keeping with your Chrysler factory/Offenhauser theme, and what was available to use at the time, I would pursue these options:
The factory remote oil filter system used on Australian/S. African/British RHD Chrysler products.
(Photos borrowed from a thread by
@ProjectBazza )
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Kind of an awkward setup, but they already had it in the parts bin...
There were also similar remote oil filter setups used by Chrysler Marine and Chrysler Industrial.
Otherwise, a remote like this would be a nice accent to the Offenhauser air cleaner you may be using:
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OTB Gear 6547 Remote Oil Filter Adapter, Finned, Unpolished
On the engine side, block/plug the filter center bolt hole, remove the existing pipe plug, and tap the remaining hole to 3/8 NPT and you have your oil feed and return ports, no adapter needed. Just run hose or braided line from the tapped ports with the fittings of your choice, probably 45s, to wherever you want to mount the remote filter.