Get the PO to write you a bill of sale which includes the VIN number. From there it is pretty easy.
I wish I could find a VIN tag for a 71 Demon. Then I could get a tag for my drag car and run it in the local KOTS.
If that notch still has a VIN tag it can be titled here in AL with a bill of sale. Car doesn't look too bad unless the rust under the trunk lid also indicates the condition of the lower doors.