Clones
I am kind of doing this same thing. I purchased a '72 Scamp for my wife but she likes the Dart Swinger look better so I just put a '70 Dart nose from a 4dr parts car I have onto her Scamp. It was a little easier to convert because the '72 Scamp rear bumper is the same as the '70 Dart and no tail light panel to change.
Chuck