1973 Dart Sport VIN Number locations?

Ok, so I picked up the car.
The number on the rad support is the same as the vin but I can't find the one at the back of the car.
Anyone with a 1973 dart sport know the exact location?
Sorry to thread jack but...
Where would the number be if its a folddown back seat car?
Rad Support, Vin Tag, Door Sticker, and ????