What about the whole vin ordeal?
A missing VIN, it will be tough to resell the car if you're looking to recover the expenses you put into restoring it. States have duplicate VIN stickers, but will suffer a hit in value. Does the seller have a clean title on hand? If not (bill of sale only), you face the daunting task of re-titling through your DMV, and the subsequent VIN reassignment.
You can find the VIN on a sticker in the inside driver's door jamb, or on the radiator support or firewall/cowl near the driver's wiper shaft. Getting a broadcast sheet helps immensely, but looks like your car's been stripped already. The only place one COULD be is behind the glovebox lining, inside the front seats, or the rear package tray.
If you don't mind my asking...what is the seller asking for this '74? What is your budget for getting a "starter?"
If you can find out the VIN, post it here. There are several resources here you can do with the VIN: give you the original engine configuration, and see if a lost broadcast sheet for it has been submitted.
Best of luck, and remember, there WILL be others. Also
www.moparts.com lists complete/project/parts cars, as well as the For Sale forum here.