318 WITH CHEVY DISTRIBUTOR

The dist is not a Chevy dist. It is a mopar dist with an HEI (Chevy) conversion, some aftermarket manufacturers make Mopar dist with the HEI built in, cap and all, looks like that is what you have.

Nothing wrong with it. Not special either.

Unless the rotor or cap is unique from the manufacturer, you should be able to buy the parts from any auto parts store.