1967 barracuda brake rotors help

Rotors are not hard to find at all, these days.
Lots of Amazon vendors, sellers, have them.
Rock Auto.
Any of your local parts stores, that stock, or can order, Centric parts.

You remove the old hub, and install it onto the new rotor.
Easy peasy.
Great thank you. I wasn't sure if the hub and rotor was all one or if it came apart.