71 Dart rear valance

What about one from a valiant or scamp?
I don't have a solid answer for you on that. My car is a '71 Dart Swinger and through my rebuild I have discovered that many parts from the '70 Darts are interchangeable with the '71 Darts. I also know some of the parts from the Scamp, Darts, and Valiant are interchangeable through each other as well. They are basically the same car with a few cosmetic differences. Sometimes it makes a big difference if the car is a two door or four door too depending upon what you are talking about.

It seems to me that '68-'69 cars were similar. '70-'71 cars were very similar. '72-'73 were similar. It's almost like Dodge/Chrysler made parts for two consecutive years and after two years they changed things up a bit.

I can tell you for fact that front disc brakes from a '74 Dart will fit my '71 Dart that had drum brakes. I removed the entire front suspension and converted it. Control arms and all. I'm not sure if this is helping you or not.