front rotors for '70 340 swinger

I have the exact same situation, as I have an original 1971 Duster 340 with factory discs.

I sold a 1969 Swinger 340 with factory discs in 2001, and at that time, the factory rotors were available from NAPA and AutoZone, but today, I am not sure.

These rotors are very similar to those on the 1964 1/2 - 1966 Mustangs.

There must be a source with these rotors!

Rock Auto? Napa? Advance Auto Parts? AutoZone? Somebody???