Oil pump kit???

Ok, oil pump leaks just like you would expect from a 50 year old item. I tried to find a rebuild kit, Melling number is K-66CB. Oreilly’s and Jegs show them, but if you order in about 30 minutes you get a message saying it isn’t available. Pretty sure pump is original, thought a rebuild was a good idea for a pump that is working just fine, it just leaks. Anyone have an idea where I can one with seals and gaskets? 70 Duster with 198 slant.
Cheers
Tim
It’s been about 5 years ago I was able to order the oil pump rebuild gaskets separately. The oil pump mounting gasket, the o ring gasket that goes under the rotor plate, the small gasket that goes into the relief valve end plug.
Give me a day or so and I will look in my parts manual and get the part numbers.
Another place to look and do a search is on e bay, from time to time nos rebuild kits that include the inner and outer rotors and the gaskets are posted for sale.
Also look on Rock Auto, they may have the individual gaskets for the oil pump.