Dart >>> demon doors

It’s not quite that simple. The regulators mount in different places, and you’ll have to drill all the new mounting holes. There are also some internal, spot welded brackets that are different between the Dart and Demon doors that will have to be changed over.

I covered the differences in this thread, pictures etc. The skin and frames are the same, but it will definitely take some work.

Demon door?? Which others fit?
To muddy the waters even more..
I have a 73 Sport with bad doors and a 73 Swinger with pristine doors. How much headache am I looking at to transplant the Sport guts-n-glass into a Swinger door?