Advice on buying a '75 dart.

make sure to bring a small magnet and see if it sticks to the doors, fenders, the works (if it sticks, there is metal under the paint, if not...then there is bondo in them there hills)

oh, and ask the seller to post a picture of the VIN tag
once you post that here, we can see what options should be on the car, and see if they are still there, aswell as figure out the original paint