Put new rotors on 73 Swinger and pads are rubbing!?

Since you have both new rotors, and pads, it sounds like they both are out of tolerance with one another.
The easy "fix", easy way out, of that problem is sand down the brake pad lining to you get clearance for the rotor to turn freely.
Just get yourself a sheet or two of 60 grit sandpaper, put it on the floor, and then sand down the pad lining.
Probably will be trial and error, but that will work.