Buy New or Buy a Parts Car

I came across a 72 Dart 2-dr slant 6 auto parts car I can get for around a grand. It's complete, motor, trans, and it runs. Im thinking of converting my 69 Cuda to street duty, so I'll need the heater box, ducting, some wiring, ect. I might use some interior pieces too, if anything fits (seats, door panels?)
Do you think it would be worth it to buy this parts car, or should I order all new/rebuilt stuff. The cuda is not gonna be a resto, just a driver. for now.

If what the car has the you need and are in good shape I would buy the parts car. It's right at your disposal, you are the one who removes the parts, and when all is said and done you can sell it and get some of your money back. That's what I did and was the best thing I had going for me on getting my car road worthy again...

JW